Double Bass Tuner Professional Downloads & RevenueDouble Bass Tuner Professional · App Store
Kontrabass Stimmgerät Pro
Not in any tracked top chart right now.
Updated 11 Nov 2026 · rankings refresh through the day
DeveloperPedro Daniel Macalupu Cumpen
CategoryMusic
Price14.99 EUR
Released
Rating★ 4.2 (22)
Version3.9.9
Age rating4+
First seen by us
27 Sep 2026
27 Sep 2026Installs (est.)5k+ worldwide
Double Bass Tuner Professional update history & changes
Last change · 8 events since 30 Jul 2014Full timeline ↓📈Dropped out of every chart we track💰Price rise📈Entered the top 100💰Price drop🆕First spotted by AppInsider📦Version 3.9.9🆕Released on the App Store
Full timeline · 8 events
- 📈Double Bass Tuner Professional dropped out of every chart we trackLast seen 13 Oct
- 💰Double Bass Tuner Professional: price rise68.00 CNY → 88.00 CNY · CN
- 📈Double Bass Tuner Professional entered the top 100Top Paid · Music · CN
- 📈Double Bass Tuner Professional charting in a new countryChina
- 💰Double Bass Tuner Professional: price drop14.99 EUR → 9.99 EUR · DE
- 🆕Double Bass Tuner Professional first spotted by AppInsider#91 in Top Paid · Music · Germany
- 📦Double Bass Tuner Professional version 3.9.9· Optimization for the iPhone 17 Pro Max, iPad Mini and latest iPads.
· A4 Calibration, Tuning fork and Settings (as In-App Purchases).
· Performance improvements and bug fixes - 🆕Double Bass Tuner Professional released on the App Store
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Rating
4.2 ★
22 ratings
Measured
Double Bass Tuner Professional on the App Store
App details
App ID
900942326
Publisher
Pedro Daniel Macalupu Cumpen
On the store since
Jul 2014
12 years on the store
Minimum OS
iOS 15.6+
iPhone 6s and later
Devices
iPhone · iPad
Universal purchase
Content rating
4+
Languages
33
AR HY CA CS DA NL EN FI FR DE EL HE …
Size
8 MB
Also listed in
Utilities
Double Bass Tuner Professional downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Apple publishes no download counts. App Store downloads come from chart positions and daily rating growth per country, calibrated on Google Play install counts; lifetime installs from ratings worldwide × installs per rating. Confidence is the chance the real number is within half to double ours.
Active users
All platforms, worldwide. Free with an account.
Stickiness (DAU / MAU)
how many monthly users open it on a given day
How this is calculated
Monthly users come from lifetime installs across every store, fitted on monthly active user figures companies publish; daily users = monthly × the typical daily/monthly ratio for the category. Confidence is the chance the real number is within half to double ours.
Business model: Ad-led
How Double Bass Tuner Professional makes money: subscriptions, one-off purchases and ads.
Ads · 1 ad networks
Ads
/mo
of revenue
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| Not charting right now. | ||
Ratings
App Store, worldwide.
Rating
4.2 ★
22 ratings
Measured
Ratings
22
Measured
About Double Bass Tuner Professional
Tune your double bass instantly with precision and ease!
Optimal for beginners, intermediate and advanced musicians!
· The most accurate - displays the exact sound frequency in Hz.
· Calibration for A: 392Hz, 415Hz, 432Hz, 440Hz, 441Hz, 442Hz, 443Hz, 444Hz, 466Hz.
· Instant load and fastest tuning! - Optimized for latest devices.
· Highest responsiveness and sensitivity.
· Intuitive user interface with LED tuning indicator.
· Visual indicators - tuned string lights up.
· Universal app - works with iPhone, iPad and iPod touch.
· Advanced settings (A4 Calibration, Mic sensitivity, Sound notifications) and Tuning fork!
(as in-app purchases)
What our users say:
"Does what it promises - Very useful app."
"This app makes tuning so easy!"
"By far the greatest and most accurate contrabass tuning app. Play the string, read its chart and you know whether you're in tune."
"Amazing! Outstanding, well spent money!
"All contrabassists should have this app!"
"It's very useful for me! Thank you!"
"Excellent app"
"Very convenient software. Suitable for any skill!"
---
Please make sure to allow microphone access to this app when prompted.
Check it under Settings>Privacy>Microphone. Thank you.
---
Got ideas? Questions?
Please send us your feedback through our site or to [email protected]
Optimal for beginners, intermediate and advanced musicians!
· The most accurate - displays the exact sound frequency in Hz.
· Calibration for A: 392Hz, 415Hz, 432Hz, 440Hz, 441Hz, 442Hz, 443Hz, 444Hz, 466Hz.
· Instant load and fastest tuning! - Optimized for latest devices.
· Highest responsiveness and sensitivity.
· Intuitive user interface with LED tuning indicator.
· Visual indicators - tuned string lights up.
· Universal app - works with iPhone, iPad and iPod touch.
· Advanced settings (A4 Calibration, Mic sensitivity, Sound notifications) and Tuning fork!
(as in-app purchases)
What our users say:
"Does what it promises - Very useful app."
"This app makes tuning so easy!"
"By far the greatest and most accurate contrabass tuning app. Play the string, read its chart and you know whether you're in tune."
"Amazing! Outstanding, well spent money!
"All contrabassists should have this app!"
"It's very useful for me! Thank you!"
"Excellent app"
"Very convenient software. Suitable for any skill!"
---
Please make sure to allow microphone access to this app when prompted.
Check it under Settings>Privacy>Microphone. Thank you.
---
Got ideas? Questions?
Please send us your feedback through our site or to [email protected]
Latest updates
3.9.9
· Optimization for the iPhone 17 Pro Max, iPad Mini and latest iPads.
· A4 Calibration, Tuning fork and Settings (as In-App Purchases).
· Performance improvements and bug fixes
Store changes
What Double Bass Tuner Professional changed on its store page: name, icon, screenshots, price, size, languages, requirements.
Price rise 
68.00 CNY → 88.00 CNY
Price drop
14.99 EUR → 9.99 EUR
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