Comparison

Mersenne vs Monandaeg

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Mersenne

This app is an AUv3-compatible synthesizer designed to create bell-like metallic sounds. It combines FM synthesis, a noise generator, and a resonator for crafting clear tones and complex metallic textures.

Highlights
  • AUv3-compatible synthesizer
  • Dual FM synthesis modules
  • Noise generator
  • Resonator
  • Metallic sound design
  • Bell-like tones
Features
Read full description

Mersenne is an AUv3-compatible synthesizer that combines two FM synthesis modules, a noise generator, and a resonator to create bell-like metallic sounds. It is specifically designed for crafting both clear tones and complex textures with a distinctive metallic grit, making it an ideal tool for those deeply exploring metallic sound design. For more detailed information about the product, please visit the website. The website offers detailed product descriptions, manuals and videos, as well as important notices. https://icegear.net/

About

Monandaeg

This app allows you to create complex soundscapes by layering and manipulating your own audio recordings. It features a unique system where recordings influence each other's playback and processing, leading to evolving sonic textures and arrangements.

Highlights
  • Eight recordable takes (A-H)
  • Adjustable fold stages with XY pads
  • Configurable playback and swapping network
  • Freeze and break functions
  • Tape and disc texture effects
  • Echo, room, and sweep send effects
  • Text-to-speech voice input
Features
Read full description

Mōnandæg plays your own recordings through a wave folder. Up to eight takes stand in a row, A to H. At any moment one or two of them are heard (PLAY), and one or two others are only listened to (FOLLOW): their loudness becomes voltage that pushes the fold — how hard it bends, and where the bends land. Every take has a gate of its own, wired into a small network; when one fires, the roles change hands. The piece keeps rearranging itself out of the sound itself. · A–H — eight takes. Tap the top of a cell to load a file, hold it to clear the take. REC→ chooses the take the microphone records into. · I · II · III — three fold stages in series, each an XY pad. · The net — how many takes, who plays, how they are read, when they swap. · FREEZE — one moment held as a chord. · BREAK — cuts and rewrites the files. · LOOP — one loop built from pieces of all of them. · TEXTURE — tape and disc: wow, flutter, hiss, skips, dropouts. · SEND — echo, room and sweep. · VOICE — the device reads a line of text aloud into a take of its own. · RADIO — internet radio as a source. · BASIC — one key: four takes, one heard, one listening, swapping every couple of seconds. · DRIFT — the pads and knobs move by themselves. iPhone and iPad, in landscape. Your recordings stay on the device.

Screenshots

Mersenne4 screens
Monandaeg4 screens

Verdict

The call

The clearest difference is rating: Monandaeg at 5.0 against Mersenne's 4.7. Monandaeg also leads on update cadence (every 8 days vs monthly) and price ($4.99 vs $8.00). Mersenne's advantage is ratings volume (28 vs 1) and iOS requirement (12.0 vs 17.0). On ads, in-app purchases, monetization model and device support 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

CostPrice · In-app purchases · Ads · Monetization

Mersenne costs $8.00 and Monandaeg $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Monandaeg holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Mersenne has 28 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Mersenne ships an update monthly, Monandaeg every 8 days. The most recent releases landed on November 2, 2026 and November 6, 2026 respectively.

Scorecard5 real differences · 5 level
Mersenne versus Monandaeg: the parameters behind the verdict, then further details
ParameterMersenneMonandaeg
Price$8.00$4.99 — better
Rating4.7 (28 ratings)5.0 (1 ratings) — better
Positive reviews87.5% of reviews—
Number of ratings28 — better1
Update frequencyMonthlyEvery 8 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS12.0 — better17.0
Further details — not scored
Size11 MB2 MB
Age rating4+4+
DevelopericeWorks, Inc.Kei Odaka

Customer experience

Mersenne

All ratings28 ratings
Positive92.9%
Neutral0.0%
Negative7.1%
Written reviews40 reviews
Positive87.5%
Neutral7.5%
Negative5.0%

Monandaeg

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Mersenne

No in-app purchases

None

Monandaeg

No in-app purchases

Questions

Is Mersenne free?
Mersenne costs $8.00, with no in-app purchases.
Is Monandaeg free?
Monandaeg costs $4.99, with no in-app purchases.
Which has better reviews, Mersenne or Monandaeg?
Monandaeg is rated higher. Mersenne averages 4.7 out of 5 from 28 ratings, while Monandaeg averages 5.0 from 1 ratings.
Do Mersenne or Monandaeg have ads?
Neither Mersenne nor Monandaeg shows ads.
Which is updated more often, Mersenne or Monandaeg?
Mersenne ships an update monthly, and Monandaeg every 8 days. Most recently, Mersenne was updated on November 2, 2026 and Monandaeg on November 6, 2026.

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