Double Bass Tuner vs FlexTunerPro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Double Bass Tuner
This free mobile application helps you quickly tune your double bass with professional-quality sounds. It offers auto, manual, and chromatic tuning modes, working offline for convenience. Customize settings like concert pitch and frequency filters for precise tuning.
- Offline tuning
- Auto tune mode
- Manual tune mode
- Chromatic tuner mode
- Customizable concert pitch (Hz)
- Frequency deviation in cents
- Instrument head view
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Double Bass Tuner – XTuner PRO is an easy-to-use free mobile application with which you will be able to tune your double bass quickly. The sounds for our application were recorded by professional musicians. Sounds that cannot be generated by a musician have been created synthetically. App works offline. What is the most important: it is a free tuner. The algorithm in the double bass tuner offline app has been prepared for the most effective recognition of instrument sounds. To get the auto tune result, play the sound several times. Double Bass Tuner – XTuner PRO app for instruments has three modes: auto tune, manual and pro - chromatic tuner mode. App works offline. - Auto Tune – automatic tuning – examined the frequency of the signal is interpreted to the next clear sound of the specific frequencies of pure sound. - Manual – sound tuning - select a specific sound that will be tuned. Features in the tuning app: - the ability to set the frequency of sound "a" (concert pitch) in Hz (herz), - the ability to determine the deviation from the base frequency in cents, - instrument head view, - ability to set frequency filter - custom tuning - presets for your music instrument - chromatic tuner mode – you can practise diapason using it - auto tune and manual mode - professional frequency settings – choose the concert pitch in Hz and transposition - double bass tuner offline - it is a free pro tuner; you don’t have to pay. If you would like to have version of the free tuner with no ads, you can buy premium forever or subscription. If you will have any problems with Double Bass Tuner – XTuner PRO app, please feel free to contact us: mobile@netigen.eu. EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://netigen.eu/privacy/ More information: https://xtunerpro.com/doublebass
FlexTunerPro
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Key Features ◆ 3 Tuning Modes • Tuner(Auto): Automatically detects and tunes played strings • Tuner(Manual): Select specific strings for precise tuning • Practice: Ear training mode with reference tones ◆ Instrument Profiles • 6-String Guitar (Standard tuning) • 7-String Guitar• 4-String Bass • 5-String Bass • Ukulele (Soprano) • Contrabass and other Strings Instruments • Create custom profiles ◆ Customization • A4 reference pitch adjustment (430-450Hz) • Individual string frequency settings • Supports tuning for situations such as when using a guitar capo through overall pitch adjustment • Profile export/import • Guide tone waveform can be changed from Profile Edit. Available waveforms: Sawtooth, Square, Triangle, and Original (easier to hear in low frequency ranges) ◆ User-Friendly • Large, clear tuning meter • Precise cent display • Auto-lock prevention during tuning • Japanese/English support ※ Important Note Due to the harmonics produced by musical instruments, the octave of the detected pitch may sometimes be incorrectly identified. Please note that there is currently no available method to improve this misdetection issue. 30-Day Free Trial Try all features free for 30 days. Premium Version After the trial period, a one-time purchase is required to continue using the app. Once purchased, enjoy all features forever.
Screenshots
Verdict
The clearest difference is ads: FlexTunerPro at none against Double Bass Tuner's shown. Double Bass Tuner's advantage is device support (3 vs 1) and iOS requirement (12.0 vs 18.5). On price, update cadence and in-app purchases 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
Both are free to download. Double Bass Tuner sells 2 in-app purchases, starting at $2.99 per 7 days and FlexTunerPro sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 21, 2026 and October 30, 2026 respectively.
| Parameter | Double Bass Tuner | FlexTunerPro |
|---|---|---|
| Price | Free | Free |
| Rating | 3.3 (6 ratings) — better | — |
| Number of ratings | 6 — better | — |
| Update frequency | Every 2 months | Every 2 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 12.0 — better | 18.5 |
| Further details — not scored | ||
| Size | 54 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | NETIGEN Kluzowicz sp. j. | SATOSHI NAGASAKA |
In-app purchases
Double Bass Tuner
- 1 week subscription + trial3 Days trial$2.997 Days
- Forever one-time payment$19.99
FlexTunerPro
- Premium$2.99
Questions
Is Double Bass Tuner free?
Is FlexTunerPro free?
Do Double Bass Tuner or FlexTunerPro have ads?
Which is updated more often, Double Bass Tuner or FlexTunerPro?
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