Mobile software development
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Apps: 11
Total installs: 3.6M
Avg rating: ★ 4.15
Ratings: 44K
Latest release: Sep 24, 2026
How this developer operates
- Carrier title Hearing Aid APP:PETRALEX 4 EAR holds 54% of the developer's installs
- Hit rate 55% of launches reach 100k installs (6 of 11 at least 30 days old)
- Release rhythm a new app every ~1.2 years on average
- Maintenance 1 of 11 apps updated in the last 90 days · last update 47 days ago
Listings that changed hands
| App | Direction | Counterparty | When |
|---|
 Sound Amplifier & Hearing Aid |
renamed |
Algorithm electronics |
Nov 6, 2026 |
 Snore Recorder: Sleep Tracker |
renamed |
Algorithm electronics |
Nov 6, 2026 |
 STETHOSCOPE, TELEMED, MHEALTH |
renamed |
Algorithm electronics |
Nov 6, 2026 |
 Low FODMAP Diet: IBS tracker |
renamed |
Algorithm electronics |
Nov 4, 2026 |
 Live listen: Sound Amplifier |
renamed |
Algorithm electronics |
Nov 3, 2026 |
 Listening Device – Hearing Aid |
renamed |
Algorithm electronics |
Nov 3, 2026 |
 Hearing Test: Live Audiogram |
renamed |
Algorithm electronics |
Nov 2, 2026 |
 Hearing Aid APP:PETRALEX 4 EAR |
renamed |
Algorithm electronics |
Nov 2, 2026 |
 BABY MONITOR App: Nanny Cam |
renamed |
Algorithm electronics |
Oct 31, 2026 |
 Volume Control Sound Amplifier |
renamed |
Algorithm electronics |
Oct 29, 2026 |
 Video Volume Booster |
renamed |
Algorithm electronics |
Oct 29, 2026 |
All apps
| App | Style | Rating | Installs | Released |
|---|
|
Hearing Aid APP:PETRALEX 4 EAR
|
Medical |
★ 4.5 |
1,000,000+ |
Apr 1, 2014 |
|
Hearing Test: Live Audiogram
|
Health & Fitness |
★ 4.4 |
100,000+ |
Apr 6, 2018 |
|
Live listen: Sound Amplifier
|
Entertainment |
★ 4.6 |
100,000+ |
Nov 11, 2021 |
|
Listening Device – Hearing Aid
|
Health & Fitness |
★ 4.5 |
100,000+ |
Apr 9, 2018 |
|
STETHOSCOPE, TELEMED, MHEALTH
|
Medical |
★ 2.8 |
100,000+ |
Jun 4, 2020 |
|
Sound Amplifier & Hearing Aid
|
Entertainment |
★ 4.3 |
100,000+ |
Nov 6, 2020 |
|
Low FODMAP Diet: IBS tracker
|
Health & Fitness |
★ 4.4 |
50,000+ |
May 20, 2022 |
|
Video Volume Booster
|
Video Players & Editors |
★ 2.9 |
50,000+ |
Feb 14, 2019 |
|
Volume Control Sound Amplifier
|
Music & Audio |
★ 4.4 |
10,000+ |
Mar 5, 2019 |
|
BABY MONITOR App: Nanny Cam
|
Parenting |
★ 4.6 |
10,000+ |
Aug 29, 2021 |
|
Snore Recorder: Sleep Tracker
|
Health & Fitness |
— |
100+ |
Sep 24, 2026 |
