Comparison

APM Sweep vs Bitbop

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

Head to head
About

APM Sweep

This application helps measure and analyze a room's acoustical performance, including reverberation time and clarity. It suggests materials to improve sound quality and allows for saving, loading, and exporting results in common spreadsheet formats. PDF reports with photos can also be generated.

Highlights
  • Acoustical performance measurement
  • Reverberation time and clarity analysis
  • Material recommendation for improvement
  • Save, load, and export results
  • Generate PDF reports with photos
  • Tutorial slideshow for guidance
Features
Read full description

APM Sweep is the successor of the well known APM Tool: it let you quickly measure the acoustical performance of a room (reverberation time, clarity, etc. in octave and third octave bands), check if that room is well suited for its purpose and, if not, choose which materials can improve the acoustical quality. Everything still there but with an exciting improvement: now you can use all the power of the Exponential Sine Sweep technique for the measurement process, so your results can be extremely precise and accurate. You can also, save, load and export results in common spreadsheet format. The app can also generate pdf reports with photos. A tutorial slideshow explains the app use. Required at least iOS 11.0

About

Bitbop

Create music with a pocket instrument where every pad is in key. Explore over 1,000 songs across various genres, customize sounds with five unique synthesizer worlds, and visualize your music with full-screen graphics. Share your creations as video, audio, or links.

Highlights
  • Pocket instrument with in-key pads
  • 1,000+ song templates across genres
  • Five distinct synthesizer sound worlds
  • Full-screen music visualizations
  • Export audio, MIDI, and video
  • Real-time collaborative jamming
  • Offline functionality
Features
Read full description

Bitbop is a pocket instrument for making music. Every pad is in key, so you can't play a wrong note, and a full band plays along: lead, bass, bells and drums. START FROM 1,000+ SONGS Techno, house, trance, drum and bass, synthwave, lo-fi, hip-hop, disco, afrobeat, latin, raga, classical, folk and Bitbop originals. Load one, change anything, make it yours. Or tap Surprise me and start from a new idea. FIVE SOUND WORLDS Each one is its own synthesizer: - Bitbop: the signature chiptune sound, a PWM lead and a chip supersaw - Techno: a resonant lead, a clean sub and a driven kit - Retro: a pulse melody, square chimes and a smooth triangle bass - Classical: bowed strings and a plucked harp in a concert hall - Dancehall: a syncopated sub, a skank chop and a steppers riddim SOUND YOU CAN SEE 100 full-screen visuals that follow every note you hear. SHARE WHAT YOU MAKE - Export a video for stories and feeds, with the visuals you see - Export WAV audio or MIDI for any music app - Share a song as a link or QR code - Go Live: friends watch your jam in real time from a link, no app needed PLAY YOUR WAY - Tempo from 65 to 250 BPM, a vibe filter and a feel control for swing - Loops from 8 steps up to 10 bars, with a fader for lead, bass, bells and drums - Undo, erase, copy and paste, and lock a control between songs NO ADS. NO ACCOUNTS. Bitbop works offline and your songs stay on your device. Only anonymous usage counts are sent, and you can turn them off in Settings.

Screenshots

APM Sweep4 screens
Bitbop4 screens

Verdict

The call

The clearest difference is rating: Bitbop at 5.0 against APM Sweep's 1.0. Bitbop also leads on update cadence (weekly vs every 10 months). APM Sweep's advantage is device support (3 vs 1) and iOS requirement (15.6 vs 18.0). On price, ratings volume, ads and in-app purchases 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

Bitbop holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

UpkeepUpdate frequency

APM Sweep ships an update every 10 months, Bitbop weekly. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

Scorecard4 real differences · 6 level
APM Sweep versus Bitbop: the parameters behind the verdict, then further details
ParameterAPM SweepBitbop
PriceFreeFree
Rating1.0 (1 ratings)5.0 (1 ratings) — better
Positive reviews50.0% of reviews—
Number of ratings11
Update frequencyEvery 10 monthsWeekly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.6 — better18.0
Further details — not scored
Size35 MB3 MB
Age rating4+4+
DeveloperLorenzo RizziFranz Enzenhofer

Customer experience

APM Sweep

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

Bitbop

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

In-app purchases

None

APM Sweep

No in-app purchases

None

Bitbop

No in-app purchases

Questions

Is APM Sweep free?
APM Sweep is free to download, with no in-app purchases.
Is Bitbop free?
Bitbop is free to download, with no in-app purchases.
Which has better reviews, APM Sweep or Bitbop?
Bitbop is rated higher. APM Sweep averages 1.0 out of 5 from 1 ratings, while Bitbop averages 5.0 from 1 ratings.
Do APM Sweep or Bitbop have ads?
Neither APM Sweep nor Bitbop shows ads.
Which is updated more often, APM Sweep or Bitbop?
APM Sweep ships an update every 10 months, and Bitbop weekly. Most recently, APM Sweep was updated on November 3, 2026 and Bitbop on October 31, 2026.

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