Comparison

iAutoharp vs microTERA

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

Head to head
About

iAutoharp

Easily play chords and strum along to popular tunes without musical training. Reconfigure chord buttons for over 150 chords per key and experiment with melodies by picking subsets of strings.

Highlights
  • Tap chord buttons to strum
  • Switch keys and chords effortlessly
  • Reconfigure over 150 chords per key
  • Pick out melodies by pinching strings
  • Accompaniment for singing or playing along
Read full description

The iAutoharp is easy and fun to play; just tap a chord button and strum to hear that chord played as sweetly as if on the actual 37-string instrument. * Switch keys and chords effortlessly. No musical training is required, and the interface is well designed for the small screen. * Use any of six chord buttons, initially set to common chords so you can easily accompany your singing or play along on most popular tunes. * Reconfigure chord buttons to get any of more than 150 possible chords for each key. You don't need to understand music theory, but if want to learn more about it, the autoharp is a great way to experiment. * Try picking out a melody by "pinching" subsets of strings with two fingers. Please look for other apps by HotPaw Productions in the Music category of the App store: the inTuna Strobe Guitar Tuner, Music Spectrograph, and Sing-inTuna, to visualize if you can sing in tune.

About

microTERA

Explore unique sonic textures with this waveshaping synthesizer. Generate novel sound patches randomly or program them with detailed controls. Includes a variety of built-in effects and advanced sequencing capabilities.

Highlights
  • Waveshaper with user programmable shape
  • Random sound patch generation
  • Sequencer with programmable steps
  • Built-in effects (Chorus, Phaser, Reverb, etc.)
  • Over 150 factory sounds
  • Audiobus and Ableton Link compatible
Read full description

Waveshaping Synthesis is a type of distortion synthesis that can create dynamic spectra in a controlled way. In waveshaping, it is possible to change the spectrum with the amplitude of the sound. A simple example of this method is the clipping caused by overdriving an audio amplifier. These simple method creates an astonishing variety of sounds which are very unique and can't be reproduced by any other contemporary synth! microTERA gives you also a method of getting randomly generated sound patches in a way you never experienced before: roll the dice! Every single try gives you a new unique sound patch, really every try, promised… Waveshaping Synthesis • Wavehaper with user programmable shape • Spectral shape specification • Three sine oscillators • Feedback input for noise components • 4 Low frequency oscillators • 4 Envelopes with tempo sync • 64 time/level segments per envelope • Monophonic or polyphonic with 16 voices. • Over 150 factory sounds • Uses programmable sequences with up to 32 steps.  • Can trigger single notes and chords. • Unique randomizer generates Arpeggios with 100% usability. • 32 Arpeggios included, unlimited useer arpeggios possible. • For each step you can program tie, accent, transposition and note order Effects • Chorus • Phaser • Distortion (Tape/Tube/...) • Echo/Delay • Reverb Global • Audiobus compatible (Input slot) with state saving • Support for Ableton Link. • Inter App Audio compatible. • CoreMIDI / Virtual MIDI • Audio recorder with Metronome. • Upload to SoundCloud and File Export. • Audio pasteboard.

Screenshots

iAutoharp1 screens

Verdict

The call

The clearest difference is review sentiment: microTERA at 81% against iAutoharp's 19%. microTERA also leads on rating (4.9 vs 2.7) and update cadence (every 4 months vs every 15 months). iAutoharp's advantage is device support (3 vs 1). 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

iAutoharp costs $1.99 and microTERA $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

microTERA holds the better App Store score, 4.9 against 2.7. Both are backed by a comparable volume of ratings — 3 and 8 respectively. Written reviews point the same way: 19% of iAutoharp's written reviews are positive against 81% of microTERA's.

UpkeepUpdate frequency

iAutoharp ships an update every 15 months, microTERA every 4 months. The most recent releases landed on September 6, 2026 and September 17, 2026 respectively.

Scorecard5 real differences · 5 level
iAutoharp versus microTERA: the parameters behind the verdict, then further details
ParameteriAutoharpmicroTERA
Price$1.99$1.99
Rating2.7 (3 ratings)4.9 (8 ratings) — better
Positive reviews18.8% of reviews81.0% of reviews — better
Number of ratings38 — better
Update frequencyEvery 15 monthsEvery 4 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPod — betteriPad
Requires iOS15.211.0 — better
Further details — not scored
Size4 MB24 MB
Age rating4+4+
DeveloperHotPaw ProductionsHarry Gohs

Customer experience

iAutoharp

All ratings3 ratings
Positive33.3%
Neutral0.0%
Negative66.7%
Written reviews16 reviews
Positive18.8%
Neutral0.0%
Negative81.3%

microTERA

All ratings8 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews21 reviews
Positive81.0%
Neutral14.3%
Negative4.8%

In-app purchases

None

iAutoharp

No in-app purchases

None

microTERA

No in-app purchases

Questions

Is iAutoharp free?
iAutoharp costs $1.99, with no in-app purchases.
Is microTERA free?
microTERA costs $1.99, with no in-app purchases.
Which has better reviews, iAutoharp or microTERA?
microTERA is rated higher. iAutoharp averages 2.7 out of 5 from 3 ratings, while microTERA averages 4.9 from 8 ratings.
Do iAutoharp or microTERA have ads?
Neither iAutoharp nor microTERA shows ads.
Which is updated more often, iAutoharp or microTERA?
iAutoharp ships an update every 15 months, and microTERA every 4 months. Most recently, iAutoharp was updated on September 6, 2026 and microTERA on September 17, 2026.

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