I Compared 5 Sermon Translation Apps So Your Tech Team Doesn't Have To

Five tools, one question for each: if you handed this to a church tech volunteer on a Thursday and asked them to have it working by Sunday, would it actually work? Here's what I found comparing Voco against Kaleo AI, Aurelo, Hope Translator and LiveSunday, the five newer, church-specific tools currently competing hardest for the same small-to-mid-size church market.

I run one of these five. Full disclosure: I built Voco, one of the tools mentioned here.

I've left out the larger enterprise platforms, Wordly, Interactio and spf.io, deliberately. Those deserve their own comparison; this piece is specifically about the newer generation of church-first, no-app, transparently priced tools that have emerged in the last couple of years.

Why these five and not others

There are more than five tools in this broader category, so it's worth explaining the filter. I picked tools that are church-specific or church-focused rather than general-purpose events platforms, publish real pricing on their website rather than requiring a sales call, and have launched or matured within roughly the last two to three years, making them genuine peers competing for the same small-to-mid-size church budget rather than legacy platforms with a different market history. OneAccord and Glossa would fit this same filter reasonably well; I've narrowed to five here specifically to keep the comparison focused rather than repeating the fuller list already covered in the alternatives roundup.

The five, side by side

Voco

£6/week Starter, £12/week Church (+VAT), 7-day free trial, no card required. Translation supports 200+ attendee languages; Starter allows 1-2 language groups per service and Church makes all supported languages available. No app for listeners, just a QR code to the browser. Church integrates with OBS, ProPresenter and vMix. Vocabulary is boosted for theological and biblical terms.

Strongest for: churches that want predictable weekly billing and no-app simplicity without thinking too hard about hours.

Weakest for: churches specifically wanting a mobile app experience for listeners, or needing Bluetooth hearing-aid streaming, which we don't currently offer.

Kaleo AI

$24/month Starter (5 hours, 2 languages), $49/month Pro (10 hours, 4 languages), $149/month Unlimited (unlimited hours, 150+ languages). Free 4-hour trial, no card. No hardware, browser-based via QR code, optional iOS app for Bluetooth hearing-aid streaming specifically. Custom-trained on theological terminology.

Strongest for: churches that want the widest language ceiling (150+) at the top tier, and the optional hearing-aid app is a genuine differentiator if that's a need in your congregation.

Weakest for: churches needing more than 4 simultaneous languages without jumping straight to the Unlimited tier, since Pro caps at 4.

Aurelo

Free forever tier (2 hours/month, 60+ languages, no card required), then €49/month (10 hours) up to €199/month (50 hours), up to 40% off annual billing. No app, no hardware beyond a basic laptop and audio interface. Explicitly marketed against the cost of traditional FM hardware.

Strongest for: the smallest budget in this comparison, and genuinely the only one of the five with a permanent, unlimited-duration free tier rather than a time-boxed trial.

Weakest for: churches wanting theological vocabulary training specifically called out as a feature, Aurelo's public materials focus more on price and simplicity than on vocabulary tuning.

Hope Translator

Free tier (30 minutes/month, up to 5 listeners), Stream Starter from roughly $14 to $20/month (5 hours, 2 languages, 10 listeners), scaling to an Enterprise tier near $500/month (50 hours, 20 languages, 500 listeners). Annual billing saves around 30%. QR code, app optional.

Strongest for: a very small church or plant that wants to try translation without committing to a paid plan at all, the 30-minutes-free tier is real and ongoing, not a one-time trial.

Weakest for: churches with more than a handful of regular attendees on the free tier, the 5-listener cap will be reached fast by most congregations.

LiveSunday

$5/hour pay-as-you-go (2 languages included), $59/month Pro (12 hours, 5 languages), ~$99/month for a higher tier (25 hours, 5 languages). Broad AV integration across OBS, Streamlabs, vMix, ProPresenter and EasyWorship on every plan. No app, browser-based, custom vocabulary support. There is a direct Voco and LiveSunday comparison if these two end up as your shortlist.

Strongest for: churches wanting the broadest native AV software integration list of the five, and genuine hourly pay-as-you-go pricing for occasional or seasonal use.

Weakest for: congregations needing more than 5 simultaneous output languages, which is a hard cap on Pro and the tier above it.

Side-by-side table

Key takeaways from the table: Aurelo and Hope Translator are the only two with a genuinely permanent free tier rather than a time-limited trial, useful if your church wants to test the waters for months before committing to a subscription. Voco is the only one billing weekly rather than monthly or hourly. LiveSunday is the only one without any free access at all, though its $5/hour pay-as-you-go rate is the lowest true entry cost for a single event. On language ceilings, Kaleo's top tier and Voco's Church plan both offer the highest simultaneous-language capacity in this group.

What actually broke, and what didn't

Testing translation tools against real sermon audio, rather than a clean demo script, is where the differences show up. Theological vocabulary is the consistent stress test: names like Nehemiah, terms like propitiation or eschatology, and denominational phrasing specific to your tradition. Every tool in this comparison claims some form of church or theological vocabulary handling except Aurelo, whose marketing leans more on price than on vocabulary tuning specifically, worth testing directly if that matters to you rather than assuming parity across the five.

WiFi reliability is the other consistent variable, and it's one I'd urge you to test on your own church's network before committing to any of the five, rather than trusting a demo done on fast conference WiFi. Ask directly whether the tool reconnects and backfills missed text after a dropout, or simply loses the gap, since that detail rarely appears on a pricing page.

Backfill came out of practising at home, not out of a disaster. I kept turning over what happens when the wifi drops for a second, or someone locks their phone, or taps out of the tab to answer a message. On most tools you come back to a blank screen and whatever was said in the gap has gone. It seemed obvious that the transcription should keep running underneath and fill the gap back in when you return, so you are not refreshing and starting over. Losing your place in a sermon because you glanced at a text is a small thing. It is also exactly the kind of small thing that stops someone bothering the following week.

How to run your own five-minute test

If you want to replicate this comparison yourself rather than taking my word for it: pick a two-minute clip of a recent sermon with at least one Bible name and one theological term in it, sign up for the free tier or trial of two or three of these five, and run the same clip through each. Note how each handles the vocabulary, how long the QR-to-translation delay is, and whether the interface makes sense to someone who's never used it before. That's a more honest test than any comparison article, including this one, because it's your congregation's actual accent, pace and vocabulary rather than a generic demo.

What each tool assumes about your existing setup

Worth spelling out separately, because it's easy to assume any of these five will simply work with whatever sound system a church already has, and that's mostly, not entirely, true. All five need a clean audio feed from your existing sound desk or a direct line from the pastor's microphone, which almost every church already has the cabling for, but it's worth confirming with your sound engineer before a trial rather than discovering a routing gap on the day. LiveSunday and Voco both list explicit integrations with common church AV software (OBS, ProPresenter, vMix, and in LiveSunday's case also Streamlabs and EasyWorship), which matters if your service is already run through one of those programs and you want the translation feed tied into the same pipeline rather than run as a separate standalone process. Kaleo, Aurelo and Hope Translator are more agnostic about the underlying AV setup, plugging in wherever you can route a clean audio signal, which is simpler for a church with a more basic setup but offers less native integration for a church already deep into a specific production software.

None of the five need new microphones or a new sound desk. The upfront hardware cost across all five is effectively the same: whatever audio interface bridges your existing system to a laptop, typically $30 to $100.

Questions worth asking beyond the five I covered

If you're evaluating any of these tools, or a sixth one I haven't covered, a short list of questions will get you further than reading any comparison article, including this one. Ask what happens on a WiFi dropout mid-sentence, specifically whether the tool backfills the missed text or simply leaves a gap the listener has to notice and work around themselves. Ask how the vendor defines a language limit, whether it's simultaneous output languages or total languages available to choose from across different sessions, since those are frequently conflated in marketing copy and matter enormously for a multilingual congregation running several languages at once. Ask whether pricing includes a hard cap on listeners or attendees, since a per-listener limit buried in a lower tier can turn a cheap-looking plan into an expensive upgrade the first time your Easter or Christmas attendance spikes past your usual Sunday number. And ask directly about theological vocabulary handling rather than trusting a claim on a features page, since "trained on religious terminology" can mean anything from a genuinely tuned model to a generic language model with no special handling at all.

The honest bottom line

There isn't a single winner here, and that's the actual finding, not a dodge. Aurelo and Hope Translator win on price for a very small church testing the waters. LiveSunday wins on AV integration breadth. Kaleo wins on language ceiling at its top tier. Voco, for what it's worth, is built specifically around weekly billing and no-app simplicity, which suits a normal Sunday-service church well, but if your congregation specifically needs Bluetooth hearing-aid streaming, Kaleo's optional app currently covers that gap better than we do.

Test two or three of the five against your own sermon audio before deciding. The no-app approach shared by four of these five matters more than it might first seem.

Frequently asked questions

What should churches know about why these five and not others?

There are more than five tools in this broader category, so it's worth explaining the filter. I picked tools that are church-specific or church-focused rather than general-purpose events platforms, publish real pricing on their website rather than requiring a sales call, and have launched or matured within roughly the last two to three years, making them genuine peers competing for the same small-to-mid-size church budget rather than legacy platforms with a different market history. OneAccord an

What should churches know about the five, side by side?

£6/week Starter, £12/week Church (+VAT), 7-day free trial, no card required. Translation supports 200+ attendee languages; Starter allows 1-2 language groups per service and Church makes all supported languages available. No app for listeners, just a QR code to the browser. Church integrates with OBS, ProPresenter and vMix. Vocabulary is boosted for theological and biblical terms.

What should churches know about side-by-side table?

Key takeaways from the table: Aurelo and Hope Translator are the only two with a genuinely permanent free tier rather than a time-limited trial, useful if your church wants to test the waters for months before committing to a subscription. Voco is the only one billing weekly rather than monthly or hourly. LiveSunday is the only one without any free access at all, though its $5/hour pay-as-you-go rate is the lowest true entry cost for a single event. On language ceilings, Kaleo's top tier and Voc

What should churches know about what actually broke, and what didn't?

Testing translation tools against real sermon audio, rather than a clean demo script, is where the differences show up. Theological vocabulary is the consistent stress test: names like Nehemiah, terms like propitiation or eschatology, and denominational phrasing specific to your tradition. Every tool in this comparison claims some form of church or theological vocabulary handling except Aurelo, whose marketing leans more on price than on vocabulary tuning specifically, worth testing directly if

First published on Medium.