Comparison

Number System Trainer vs GraceChords

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Number System Trainer

Learn and master the Nashville Number System for music. This app offers interactive modules to help musicians of all levels understand chord progressions, transpose songs, and improve their ear training. It's designed for quick learning and on-the-fly musical communication.

Highlights
  • Interactive learning modules
  • Chord reading and identification
  • Instant transposition
  • Ear training exercises
  • Visual chord shapes
  • Circle of 4ths & 5ths reference
Features
Read full description

Number System Trainer teaches you the Nashville Number System — the method worship musicians and session players use to learn songs fast, transpose on the fly, and communicate with any musician in any key. Whether you're a beginner who only knows 3 chords or an experienced worship leader, this app meets you where you are. 6 INTERACTIVE MODULES • Learn — A 5-step intro to how the number system works • Read Charts — 4 levels from basic chords to slash chords • Transpose — Move full progressions to any key instantly • Ear Training — 3 levels, identify chords just by listening • Play Along — See piano and guitar shapes in every key, with capo tips built in • Circle of 4ths & 5ths — Tap any key to see all 7 chords No login required. Works instantly.

About

GraceChords

This app provides worship leaders and musicians with tools for preparing and performing music. It features adjustable chord charts, setlist creation, live lyric following, and a built-in Bible reader. It also includes essential practice tools like a tuner and metronome.

Highlights
  • Adjustable chord-over-lyric charts
  • One-tap transposition
  • Setlist creation and management
  • Live lyric following
  • Built-in Bible reader
  • Guitar tuner, metronome, pitch pipe, capo calculator
  • Printable songbook export
Features
Read full description

GraceChords is a toolset for worship leaders and anyone who wants to play, prepare, and lead worship — on stage, in rehearsal, or on your own. Built by one person for small church teams, it keeps the essentials clean and gets out of your way. CHORD CHARTS THAT WORK ON STAGE Readable chord-over-lyric charts. Adjust the size, tap to transpose to any key, and the chart re-aligns instantly. No clutter, no ads. TRANSPOSE IN A TAP Move any song up or down with a single control. Set a key for a song, or override it just for one setlist — saved where it belongs. BUILD AND LEAD SETLISTS Create setlists, drag to reorder, rename inline. In performer mode, swipe song to song with your per-setlist keys already applied — everything you set in prep is there when you play. FOLLOW ALONG LIVE No screen in the room? The worship leader shares a Live Session link and everyone follows the lyrics live from their own phone or browser — in sync, in the moment. DAILY BIBLE READING A built-in reader following the M'Cheyne plan, so time in the Word stays part of the rhythm, not a separate app. Write private reflections and prayers to look back on later. A FULL WORSHIP TOOLKIT Built-in guitar tuner, metronome with tap tempo, pitch pipe, and capo calculator — the tools you reach for in rehearsal, without leaving the app. Export a printable songbook for when you want to unplug! GraceChords is available for both iPhone and iPad!

Screenshots

Number System Trainer4 screens
GraceChords4 screens

Verdict

The call

The clearest difference is monetization model: GraceChords at free against Number System Trainer's free with in-app purchases. On price, rating, review sentiment and ratings volume there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Number System Trainer against 5.0 for GraceChords. Both are backed by a comparable volume of ratings — 10 and 5 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

Number System Trainer ships an update weekly, GraceChords every 9 days. The most recent releases landed on October 2, 2026 and October 13, 2026 respectively.

Scorecard1 real difference · 9 level
Number System Trainer versus GraceChords: the parameters behind the verdict, then further details
ParameterNumber System TrainerGraceChords
PriceFreeFree
Rating5.0 (10 ratings)5.0 (5 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings10 — better5
Update frequencyWeekly — betterEvery 9 days
AdsNoNo
In-app purchasesNoNo
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.0 — better15.1
Further details — not scored
Size10 MB35 MB
Age rating4+4+
DeveloperBrandon OaksRyan William Moore

Customer experience

Number System Trainer

All ratings10 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews7 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

GraceChords

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Number System Trainer

No in-app purchases

None

GraceChords

No in-app purchases

Questions

Is Number System Trainer free?
Number System Trainer is free to download, with no in-app purchases.
Is GraceChords free?
GraceChords is free to download, with no in-app purchases.
Which has better reviews, Number System Trainer or GraceChords?
Number System Trainer and GraceChords are both rated 5.0 out of 5 on the App Store, from 10 and 5 ratings respectively.
Do Number System Trainer or GraceChords have ads?
Neither Number System Trainer nor GraceChords shows ads.
Which is updated more often, Number System Trainer or GraceChords?
Number System Trainer ships an update weekly, and GraceChords every 9 days. Most recently, Number System Trainer was updated on October 2, 2026 and GraceChords on October 13, 2026.

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