Comparison

TOPLAPapp vs PhonoPaper

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

Head to head
About

TOPLAPapp

This app offers a unique sonic puzzle experience using a virtual machine for sound synthesis. Users control the machine by placing command letters and adjusting parameter sliders to generate experimental, often noisy, electronic music.

Highlights
  • Virtual machine for sound synthesis
  • Instruction-based sound generation
  • Parameter sliders for sound control
  • Grid-based command placement
  • Experimental sonic art focus
  • Live coding principles
Features
Read full description

TOPLAPapp is a sonic puzzle based around a virtual machine for sound synthesis. This machine accepts a few valid instructions represented by the letters T, O, P, L, A, and p, and you control it by placing each command letter within a grid, along with setting some associated parameter sliders. The machine rushes through the instruction set to create output sounds, which are usually of a somewhat noisy character, hopefully interestingly so. The historical antecedents include instruction synthesis as pioneered at the Institute of Sonology in the 1970s, and the live coding movement, of modifying a running program as it acts. This app is intended for those interested in more experimental sonic art: don't download unless you are open to stranger computer music sounds ((http://www.toplap.org).

About

PhonoPaper

This app decodes images containing encoded sound, allowing you to play back audio embedded within visual patterns. You can also record your own sounds and convert them into these unique visual codes. It's designed for creative audio messaging and artistic expression.

Highlights
  • Decode images with encoded sound
  • Create sound codes from recordings
  • Offline decoding capability
  • Analogue code for distortion resilience
  • Real-time, hand-controlled playback
  • Draw codes for unique sounds
Features
Read full description

PhonoPaper is a camera app for playing pictures with encoded sound (PhonoPaper-codes). With this app, you can also create your own codes: 10 seconds of sound can be recorded from a microphone and converted into an image. [ Key features ] * PhonoPaper does not require access to the network for decoding; * PhonoPaper code is analogue, so it is not so sensitive to different types of the image distortion (bad camera, dark picture, wrinkled paper, etc.); at least you will hear the "silhouette" of the original sound; * code can be played in real-time with hand-controlled speed and direction; * code can be drawn by hand to get some unusual sounds. [ Examples of usage ] * voice messages (or pieces of music) on t-shirts, billboards, posters, postcards, goods; * audio labels for phonorecords; * audio examples in books; * secret messages; * art-experiments. [ How to use ] Launch the app, point the camera at the code (tap on the screen to focus if necessary) and smoothly scan the picture from left to right. The code should be parallel to the frame - try to keep the camera level. The black code markers (top and bottom) should fall entirely into the frame. If the application recognizes code markers, you will hear a sound. If you are unable to play the code smoothly, press the record button on the right side of the screen, this will enable automatic scanning.

Screenshots

TOPLAPapp2 screens
PhonoPaper1 screens

Verdict

The call

The clearest difference is update cadence: PhonoPaper at every 4 months against TOPLAPapp's every 49 months. PhonoPaper also leads on ratings volume (45 vs 4). TOPLAPapp's advantage is rating (4.8 vs 4.6) and review sentiment (95% vs 83%). On price, ads, in-app purchases and monetization model 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

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

TOPLAPapp holds the better App Store score, 4.8 against 4.6. That said, the two scores are not equally well evidenced: PhonoPaper has 45 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 95% of TOPLAPapp's written reviews are positive against 83% of PhonoPaper's.

UpkeepUpdate frequency

TOPLAPapp ships an update every 49 months, PhonoPaper every 4 months. The most recent releases landed on September 24, 2026 and October 10, 2026 respectively.

Scorecard5 real differences · 5 level
TOPLAPapp versus PhonoPaper: the parameters behind the verdict, then further details
ParameterTOPLAPappPhonoPaper
PriceFreeFree
Rating4.8 (4 ratings) — better4.6 (45 ratings)
Positive reviews95.5% of reviews — better82.7% of reviews
Number of ratings445 — better
Update frequencyEvery 49 monthsEvery 4 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS7.0 — better12.0
Further details — not scored
Size0 MB4 MB
Age rating4+4+
DeveloperJoshua ParmenterAlexander Zolotov

Customer experience

TOPLAPapp

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews22 reviews
Positive95.5%
Neutral0.0%
Negative4.5%

PhonoPaper

All ratings45 ratings
Positive88.9%
Neutral4.4%
Negative6.7%
Written reviews75 reviews
Positive82.7%
Neutral2.7%
Negative14.7%

In-app purchases

None

TOPLAPapp

No in-app purchases

None

PhonoPaper

No in-app purchases

Questions

Is TOPLAPapp free?
TOPLAPapp is free to download, with no in-app purchases.
Is PhonoPaper free?
PhonoPaper is free to download, with no in-app purchases.
Which has better reviews, TOPLAPapp or PhonoPaper?
TOPLAPapp is rated higher. TOPLAPapp averages 4.8 out of 5 from 4 ratings, while PhonoPaper averages 4.6 from 45 ratings.
Do TOPLAPapp or PhonoPaper have ads?
Neither TOPLAPapp nor PhonoPaper shows ads.
Which is updated more often, TOPLAPapp or PhonoPaper?
TOPLAPapp ships an update every 49 months, and PhonoPaper every 4 months. Most recently, TOPLAPapp was updated on September 24, 2026 and PhonoPaper on October 10, 2026.

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