Comparison

ab Astrometry X vs TETSUO

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

Head to head
About

ab Astrometry X

This advanced audio effect offers dynamic multitap delay with randomized tap positioning around the listener. Control tap viscosity, time, and loudness intuitively via an XY pad. Create custom delay lines by syncing to your DAW or using free time, in serial or parallel modes.

Highlights
  • Random tap positioning
  • Viscosity, Time, and Loudness control
  • Intuitive XY Pad design
  • DAW sync or free time
  • Serial or parallel mode
Features
Read full description

ab Astrometry X is an Advanced Multitap Delay with random positioning of each tap around the listener's head. Each tap comes with a variables Viscosity, Time and Loudness controllable through an intuitive XY Pad Design. Each tap's time can be set to be synced to the DAW or with free time, in serial or parallel mode - allowing users to create custom and creative Delay lines.

About

TETSUO

This app offers a unique, generative percussion experience with no pre-loaded samples. It features a complex sound engine and a dynamic sequencer that can be unpredictable, allowing for negotiation rather than direct programming. Create and save evolving soundscapes with its section-based recording system.

Highlights
  • Chaotic percussion engine
  • No samples or library
  • Resonant filter and bitcrusher
  • Dynamic 16-slot sequencer
  • Randomized hit skipping
  • Section-based sound recording
  • AUv3 and standalone support
Read full description

TETSUO is a chaotic percussion machine. No samples, no library. One voice built out of a pitched body with noise dragged through it, a resonant filter that saturates the harder you lean on it, a bitcrusher, and a waveshaper that runs from a bit of weight to total structural failure. The sequencer is sixteen unseen slots and STEPS knob decides how many of them fire, adding and taking away hits one at a time in a fixed order, so you can strip a pattern to the bone and build it back and the same beats come home. The SKIP control works against you on purpose, stealing hits at random while it plays, so it never quite settles. MUTATE modulates the pitch at random, setting fire to voices on every turn. You do not program TETSUO so much as negotiate with it. The strip along the top is how you attempt to hold onto anything. Sixty four steps, four turns of pattern, carved into as many as eight sections. Select a section. Find a sound. Hit RECORD, and that section keeps every knob position. Change it, record the next, then hit PLAY and it walks left to right dropping each snapshot in as it reaches it, looping. Drag the dividers to give a section longer or cut it short. It keeps settings, not audio, so the engine is playing live the entire way through. Sections save with your presets and your session. AUv3 and standalone.

Screenshots

ab Astrometry X2 screens
TETSUO4 screens

Verdict

The call

The clearest difference is price: TETSUO at $9.99 against ab Astrometry X's $12.99. ab Astrometry X's advantage is ratings volume (6 vs 2) and iOS requirement (12.0 vs 15.6). On rating, review sentiment, 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

ab Astrometry X costs $12.99 and TETSUO $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for ab Astrometry X against 5.0 for TETSUO. Both are backed by a comparable volume of ratings — 6 and 2 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Scorecard3 real differences · 7 level
ab Astrometry X versus TETSUO: the parameters behind the verdict, then further details
Parameterab Astrometry XTETSUO
Price$12.99$9.99 — better
Rating5.0 (6 ratings)5.0 (2 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings6 — better2
Update frequencyEvery 7 months—
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better15.6
Further details — not scored
Size9 MB29 MB
Age rating4+4+
DeveloperAlejandro Cabrera ZunigaAnthony Moran

Customer experience

ab Astrometry X

All ratings6 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

TETSUO

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

ab Astrometry X

No in-app purchases

None

TETSUO

No in-app purchases

Questions

Is ab Astrometry X free?
ab Astrometry X costs $12.99, with no in-app purchases.
Is TETSUO free?
TETSUO costs $9.99, with no in-app purchases.
Which has better reviews, ab Astrometry X or TETSUO?
ab Astrometry X and TETSUO are both rated 5.0 out of 5 on the App Store, from 6 and 2 ratings respectively.
Do ab Astrometry X or TETSUO have ads?
Neither ab Astrometry X nor TETSUO shows ads.

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