TouchBells vs Doubler
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
TouchBells
This app is a virtual carillon instrument for iPad, offering xylophone, vibraphone, and tubular bell sounds. Users can play freely, record and share songs, and learn to play through a teach mode. It's designed for musical exploration and early childhood education.
- Virtual carillon instrument
- Xylophone, Vibraphone, Tubular Bells sounds
- Song recording and playback
- Song sharing with other users
- Teach mode for learning songs
- Adjustable stereo effect
- Tunable instrument pitch
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TouchBells is an easy and fun to use carillon music instrument (Glockenspiel) for the Apple iPad. The instrument covers a range of 1 1/2 octaves (from C3 to F#4). Classic Xylophone sounds, Vibraphone sounds and Tubular Bells sounds are available. With TouchBells, you can just freely play along or record and play back your songs. You can also share the songs you recorded with other TouchBells users. By using the TouchBells teach mode, you can learn how to play the songs other TouchBells users share with you. TouchBells is also great for kids early musical education. TouchBells has several unique features: - Xylophone or Vibraphone sounds. - Adjustable Stereo effect. - Its tunable, you can alter the instrument pitch. - Song recording and song management. - Share you songs with other TouchBells users by eMail. - Export your songs for iTunes. - Learn how to play using the Teach Mode. - Play dynamically using TouchBells touch-sensitivity feature. - Choose from four different bar captions (None, German-, American- and Solmisation-Style). Furthermore, TouchBells includes 25 demo songs: - Cradlesong (Wiegenlied) - Frere Jacques - Muss i denn, muss i denn zum Staedtele naus - Silent Night - My Bonny Is Over The Ocean - Ode to Joy - The moon as risen - Rondo all Turka (Turkish March) - When the Saints Go Marching In - Matilda - What shall we do with the trunken sailor? - Kojo no Tsuki - The Song of the Volga Boatmen - La Cucaracha - O Christmas Tree - Jingle Bells - Happy Birthday To You - Schneewalzer - Auld Lang Syne - Row, Row, Row Your Boat - Für Elise - Michael Row the Boat Ashore - She'll Be Coming 'Round the Mountain - Hänschen Klein - Old Mac Donald With the demo songs and the TouchBells Teach Mode, you can start directly with the learning how to play!
Doubler
This real-time audio effect plugin creates a natural doubling sound for instruments and vocals. It adds richness and depth, making guitar parts sound massive and enabling flam-like effects on drums. Adjust variation parameters for precise control over the desired doubling effect.
- Real-time stereo doubling
- Enhances guitar, vocals, and polyphonic instruments
- Adds richness and depth
- Creates massive sound for riffs and solos
- Automatic vocal and instrument doubling
- Flam-like effects for drums
- Adjustable variation parameters
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The Nembrini Audio Doubler tracker turns your guitar performance into a stereo, double-tracked signal in real time, as if two guitarists were playing the same track left and right. Nembrini Audio Doubler is a plug-in designed to enhance your guitar, vocal or polyphonic instrument with a natural doubling effect, adding richness and depth. - Makes your guitar riffs and solos sound massive - Double vocal parts and polyphonic instrument automatically - Add flam-like effects to drums Just put Nembrini Audio real-time Doubler tracking plugin on your track, and adjust the variation parameters controls to create exactly the doubling effect you’re looking for Instant doubling. Works as a standalone app, AudioUnit v3 effect, or Inter-App Audio effect
Screenshots
Verdict
The clearest difference is review sentiment: TouchBells at 78% against Doubler's 0%. TouchBells also leads on price ($1.99 vs $9.99). Doubler's advantage is rating (3.8 vs 2.5) and update cadence (monthly vs every 5 months). On ads, in-app purchases, monetization model and iOS requirement 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
TouchBells costs $1.99 and Doubler $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Doubler holds the better App Store score, 3.8 against 2.5. Both are backed by a comparable volume of ratings — 2 and 6 respectively. Written reviews complicate that: 78% of TouchBells's written reviews are positive against 0% of Doubler's, so the app with the better star average is not the one people write more warmly about.
TouchBells ships an update every 5 months, Doubler monthly. The most recent releases landed on September 21, 2026 and October 13, 2026 respectively.
| Parameter | TouchBells | Doubler |
|---|---|---|
| Price | $1.99 — better | $9.99 |
| Rating | 2.5 (2 ratings) | 3.8 (6 ratings) — better |
| Positive reviews | 77.8% of reviews — better | 0.0% of reviews |
| Number of ratings | 2 | 6 — better |
| Update frequency | Every 5 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 15.0 | 15 |
| Further details — not scored | ||
| Size | 66 MB | 22 MB |
| Age rating | 4+ | 4+ |
| Developer | Thomas Braun | Nembrini Audio |
Customer experience
TouchBells
Doubler
In-app purchases
TouchBells
No in-app purchases
Doubler
No in-app purchases
