Comparison

nils vs TfxEcho

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

Head to head
About

nils

This real-time audio effect machine offers bitcrush, delay, and gain for distortion. It functions as a sampler and looper, allowing for lo-fi sound manipulation for both beginners and professionals. Supports Audiobus and various audio inputs.

Highlights
  • Real-time audio effects
  • Bitcrush, delay, gain
  • Sampler functionality
  • Minimalistic looper
  • Audiobus support
  • Export audio
Features
Read full description

..:: || NEW || AudioBus Support || ::.. Real time bitcrush, sampler and looper. Nils is a real time sound effect machine with a minimalistic looper. It comes with bitcrush, delay and gain for distortion. As input you can use the internal microphone, your earpods or accessories like iRig. Can also be used as a sampler, by holding the delay buffer and changing its phase. Lo-fi looping for both beginners and professionals. +++ Audiobus (input/effects/output). +++ Real time. +++ Bitchrush. +++ Sample rate (1 Hz - 44100 Hz). +++ Delay. +++ Hold delay buffer. +++ Play delay buffer. +++ Gain (goes up to 11). +++ Limiter. +++ Tape looper. +++ Export (email, soundcloud, MAPI audio copy).

About

TfxEcho

This audio plugin offers a warm, dark echo effect inspired by analog delay units. It allows for adjustable delay times, feedback, and filters, with modulation capabilities and tempo syncing. The plugin captures high-frequency signals for a versatile sound.

Highlights
  • Echo and delay effect
  • BBD-inspired delay lines
  • Adjustable delay time (20-1200 ms)
  • Feedback control (0-100%)
  • Low-pass and high-pass filters
  • Modulation rate and width
  • Tempo sync
Features
Read full description

TfxEcho is an echo effect AudioUnit Extension plugin. It uses delay lines which are inspired by BBD (bucket brigade device). BBD is used in various analog delay unit and is known for its warm and dark sound. The delay line uses fixed length buffer and an artificial clock to sample input signal in variable sampling rate. When the delay time is changed, the delay line can produce pitch change effect which is similar to the behavior of the BBD based analog delay unit. The delay line is inspired by BBD, but it is not emulation of the any particular BBD. Unlike the typical BBD based delay unit, frequency range of the delay line is not limited. The delay line is capable to capture signal in higher frequency up to about 22KHz. Features AudioUnit Extension - Delay Time: From 20 ms to 1200 ms - Feedback: From 0 % to 100 % - Adjustable lowpass filter and high-pass filter. - Modulation rate: From 0.01 Hz to 10 Hz - Modulation width: From 0 ms to +/- 10 ms - Delay time can be synced to tempo provided by the host application. Host Application Host application uses system audio input as an audio source and processed audio signal is routed to the system audio output.

Screenshots

nils4 screens
TfxEcho2 screens

Verdict

The call

The clearest difference is update cadence: nils at every 5 weeks against TfxEcho's every 3 months. nils also leads on price ($1.99 vs $4.99) and iOS requirement (8.0 vs 13.5). On rating, review sentiment, ratings volume and ads 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

nils costs $1.99 and TfxEcho $4.99 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 — 4.8 for nils against 4.7 for TfxEcho. Both are backed by a comparable volume of ratings — 13 and 12 respectively. Written reviews are what separate them: 72% of nils's written reviews are positive against 80% of TfxEcho's.

UpkeepUpdate frequency

nils ships an update every 5 weeks, TfxEcho every 3 months. The most recent releases landed on September 25, 2026 and September 20, 2026 respectively.

Scorecard3 real differences · 7 level
nils versus TfxEcho: the parameters behind the verdict, then further details
ParameternilsTfxEcho
Price$1.99 — better$4.99
Rating4.8 (13 ratings) — better4.7 (12 ratings)
Positive reviews72.2% of reviews80.0% of reviews — better
Number of ratings13 — better12
Update frequencyEvery 5 weeks — betterEvery 3 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS8.0 — better13.5
Further details — not scored
Size8 MB1 MB
Age rating4+4+
DeveloperErik SigthRyo Togawa

Customer experience

nils

All ratings13 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews18 reviews
Positive72.2%
Neutral5.6%
Negative22.2%

TfxEcho

All ratings12 ratings
Positive91.7%
Neutral0.0%
Negative8.3%
Written reviews5 reviews
Positive80.0%
Neutral0.0%
Negative20.0%

In-app purchases

None

nils

No in-app purchases

None

TfxEcho

No in-app purchases

Questions

Is nils free?
nils costs $1.99, with no in-app purchases.
Is TfxEcho free?
TfxEcho costs $4.99, with no in-app purchases.
Which has better reviews, nils or TfxEcho?
nils is rated higher. nils averages 4.8 out of 5 from 13 ratings, while TfxEcho averages 4.7 from 12 ratings.
Do nils or TfxEcho have ads?
Neither nils nor TfxEcho shows ads.
Which is updated more often, nils or TfxEcho?
nils ships an update every 5 weeks, and TfxEcho every 3 months. Most recently, nils was updated on September 25, 2026 and TfxEcho on September 20, 2026.

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