Comparison

StringLab vs Guitar Open Tunings Trainer

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

Head to head
About

StringLab

Features
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StringLab is a fast, accurate tuner for guitar, bass, and ukulele players who care about getting it exactly right. Play a string and StringLab instantly locks onto the note โ€” it automatically detects which string you're tuning and shows you precisely how far off you are and which way to turn the peg. No menus, no tapping between strings. Just tune. FEATURES โ€ข Automatic string detection โ€” play any string and StringLab finds it โ€ข Guitar, bass, and ukulele tuning libraries โ€” standard, drop, open, and alternate tunings โ€ข Chromatic mode โ€” tune any instrument to any note, free โ€ข Custom tunings โ€” save your own and recall them instantly โ€ข Instrument rigs โ€” keep multiple setups ready and switch in one tap โ€ข Adjustable reference pitch (A4 calibration) โ€ข Virtual capo โ€” transpose your target tuning up or down by semitones โ€ข Clean, readable gauges in several styles โ€ข Built-in pitch pipe โ€ข Light and dark themes STRINGLAB PRO โ€” one-time purchase, no subscription ever โ€ข The complete tuning library for every instrument โ€ข Premium gauge styles: Target, Precision, Trail, Dials, and Pulse โ€ข Metronome and a custom theme editor โ€ข Unlimited custom tunings and saved instrument rigs โ€ข Extended transpose range Tune up. Play in tune. StringLab.

About

Guitar Open Tunings Trainer

Features
Read full description

Guitar Open Tunings Trainer helps guitarists turn open tunings into playable chord movement. Retuning can make familiar chord shapes disappear. This app gives each tuning its own home base, string labels, built-in loops, movable chord shapes, and guided tuning workflow so Open G, Open D, DADGAD, Open E, Open A, and Open C feel easier to practice. Use it to practice open tunings in real chord changes: - Choose a supported open tuning before you start. - Tune string by string with guided mode, or use advanced mode with a tuner and full tuning chart. - Start with built-in loops designed for that tuning. - See the full progression while you practice. - Follow the current chord shape and preview the next move on the fretboard. - Use Key Explorer to see the chords that belong to the tuning's home key. - Compare open-position grips with movable shapes across the neck. - Build and save custom progressions locally on your device. - Practice with BPM, playback, metronome, and optional voice controls. Open Tunings Trainer focuses on practical shapes for guitarists who want to make retuned strings useful fast. It is built for slide-inspired loops, folk and blues movement, ringing drones, and the common I, IV, V, minor, and flat-seven sounds that show up in open tunings. The app is local-first. Saved sessions stay on your device. There is no account, no ads, and no cloud sync. Download free and start the free 3-day Trial. Continue month to month for $0.99 or unlock the full app once for $9.99. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

StringLab4 screens
Guitar Open Tunings Trainer4 screens

Verdict

The call

StringLab and Guitar Open Tunings Trainer are too close to call on the numbers: across 6 compared parameters โ€” price, update cadence, ads and in-app purchases among them โ€” neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. StringLab sells 1 one-off in-app purchase and Guitar Open Tunings Trainer sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

StringLab ships an update every 9 days, Guitar Open Tunings Trainer every 2 weeks. The most recent releases landed on October 31, 2026 and November 5, 2026 respectively.

ScorecardNo meaningful differences
StringLab versus Guitar Open Tunings Trainer: the parameters behind the verdict, then further details
ParameterStringLabGuitar Open Tunings Trainer
PriceFreeFree
Update frequencyEvery 9 days โ€” betterEvery 2 weeks
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPodiPhone, iPad, iPod โ€” better
Requires iOS15.115.0 โ€” better
Further details โ€” not scored
Size60 MB46 MB
Age rating4+4+
DeveloperZapArcGuitar Triad Trainer, LLC

In-app purchases

1 purchases

StringLab

One-time1
  • StringLab Pro$9.99
3 purchases

Guitar Open Tunings Trainer

Subscriptions1
  • Monthly Access$0.991 Month
One-time2
  • 3-day TrialFree
  • Lifetime Unlock$9.99

Questions

Is StringLab free?
StringLab is free to download, with in-app purchases available.
Is Guitar Open Tunings Trainer free?
Guitar Open Tunings Trainer is free to download, with in-app purchases available.
Do StringLab or Guitar Open Tunings Trainer have ads?
Neither StringLab nor Guitar Open Tunings Trainer shows ads.
Which is updated more often, StringLab or Guitar Open Tunings Trainer?
StringLab ships an update every 9 days, and Guitar Open Tunings Trainer every 2 weeks. Most recently, StringLab was updated on October 31, 2026 and Guitar Open Tunings Trainer on November 5, 2026.

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