TunerBox vs Coil
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
TunerBox
This app provides a straightforward and efficient way to tune stringed instruments like guitars, basses, and ukuleles. It offers automatic detection of common tunings and a manual mode for precise adjustments, loading instantly for immediate use.
- Instant loading tuner
- Supports common guitar tunings
- Manual tuning mode
- Works with bass and ukulele
- Simple and effective interface
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Simple, effective guitar tuner app for iPhone and iPad. Quick and easy - loads right into a tuner ready to go! Supports all common guitar tunings automatically and a manual mode! Also works with bass and ukulele!
Coil
This app simulates the sound and behavior of a spring reverb unit, offering two distinct tanks and engines for varied sonic textures. It allows for interactive "kicking" of the springs via tap or MIDI input, with adjustable decay, tone, and mix controls.
- Two distinct spring reverb tanks (Long/Short)
- Two reverb engines (physical modeling/vintage)
- Interactive "kick" feature via tap or MIDI
- Adjustable Dwell, Tone, and Mix controls
- Optional built-in amp stage
- AUv3 and standalone app support
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Coil brings the character of spring reverb into a compact, playable pedal. TWO TANKS Choose LONG for spacious, wobbling tails or SHORT for a tighter, brighter response. TWO ENGINES A uses physical spring modeling. B offers a lower-CPU vintage spring sound. Both follow the TANK switch. KICK THE TANK Tap the pedal body to strike the physical springs. You can also trigger Kick from your host, MIDI CC 83, or MIDI notes; velocity controls strike strength. THREE KNOBS DWELL sets decay, TONE shapes brightness and high-frequency damping, and MIX blends your dry signal with the reverb. CLEAN OR AMP Use the dedicated CLEAN / AMP switch to add the built-in amp stage. The lamp and artwork show the amp state. PLAY YOUR WAY Use Coil as an AUv3 audio effect in a compatible host or as a standalone app with an audio interface. The MUTED/LIVE control provides quick access to input muting. The in-app scroll guide explains controls and MIDI mappings. One purchase for Mac, iPad and iPhone.
Screenshots
Verdict
The clearest difference is price: TunerBox at Free against Coil's $0.99. TunerBox also leads on update cadence (every 4 days vs every 8 days). Coil's advantage is device support (4 vs 2) and ratings volume (3 vs 1). On rating, ads, in-app purchases and monetization model 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
TunerBox is free to download; Coil costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 5.0 for TunerBox against 5.0 for Coil. Both are backed by a comparable volume of ratings — 1 and 3 respectively.
TunerBox ships an update every 4 days, Coil every 8 days. The most recent releases landed on October 30, 2026 and November 2, 2026 respectively.
| Parameter | TunerBox | Coil |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | 5.0 (1 ratings) | 5.0 (3 ratings) |
| Number of ratings | 1 | 3 — better |
| Update frequency | Every 4 days — better | Every 8 days |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 26.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 2 MB | 75 MB |
| Age rating | 4+ | 4+ |
| Developer | Richard Stokes | Joshua Rideout |
Customer experience
TunerBox
Coil
In-app purchases
TunerBox
No in-app purchases
Coil
No in-app purchases
