Comparison

sqsl Latch vs RingsFX

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

Head to head
About

sqsl Latch

This app is a conceptual MIDI controller and sequencer for creating drone, textural, and soundscape synthesizer patches. It allows for sending MIDI notes, pitch bend, and CC values with advanced looping and parameter modulation features. Save and recall your setups for later use.

Highlights
  • MIDI note, pitch bend, and CC output
  • 16 groups with assignable MIDI channel and color
  • 8 assignable Continuous Controllers per group
  • Looper for recording and shuffling note phrases
  • Adjustable phrase playback speed and synchronization
  • Parameter modulation via internal randomizer
  • Smooth parameter transitions with LAG control
Read full description

sqsl Latch is a conceptual MIDI controller and sequencer designed for working with evolving drone, textural or soundscape synthesizer patches. It can send out MIDI notes, pitch bend and CC values. There are 16 groups split into 2 banks (a, b, c, … p). Groups have assignable MIDI channel, color and 8 Continuous Controllers (CC). When user touches one of the pads, note is activated and is held on until new touch (on the same pad) is registered. Left slider controls the velocity of note to be activated. Every group has a looper able to record note state changes - phrases. Order and velocity of recorded notes is automatically shuffled after phrase restarts (can be optionally prevented by activating group’s LOCK button).  Phrase playback speed is adjustable (CLOCK and DIVIDER parameters). Phrase can be synchronised - set to restart automatically with previous group's loop. Synchronisation can be set to happen on every pass, every second, third... up to 16th and can be set to be ignored randomly (probability setting 0-100%). Group parameters can be adjusted using sliders or modulated by internal randomiser with adjustable range (RANGE and RANGE 2 parameters) and speed (per group LAG control - left-most slider). Apart user definable CCs, each group has following MIDI parameters: MOD (mod wheel), BEND (pitch bend), VOL (volume), EXP (expression), PAN (pan), FOOT (foot controller), TOUCH (aftertouch/channel pressure). Group parameters related to phrase playback are: CLOCK (resolution and playback speed), SYNC with divider (loop synchronization), NOTE SKIP (randomly skipping notes events 0-100%), SYNC SKIP (randomly skipping sync events 0-100%), DIVIDE (integer group's CLOCK divider), LOOP (loop or one-shot setting), SHIFT (degree offset with selected scale). LAG can be applied to parameter changes - when new value is selected, change does not happen immediately but value is transitioned smoothly based on LAG time (left-most slider). Setup setting (CC numbers, channels, colors, and MIDI output) are saved and recalled when app is restarted. Loops, CC values, parameters and their modulation states can be written to preset positions for later recall. For detailed description visit https://www.seqsual.com/latch Important notes: - Latch does not make any sounds on its own, it generates MIDI messages (notes, pitchbend and CC values). - Latch does not synchronise to incoming external MIDI clock. - Latch was designed for full-size iPads and is not recommended for iPad Mini users.

About

RingsFX

This music app emulates a renowned physical modeling synthesizer, offering diverse synthesis techniques and polyphonic capabilities. It allows for real-time parameter manipulation and can process external audio, creating unique sonic textures and rhythms.

Highlights
  • Physical modeling synthesis emulation
  • Multiple polyphony modes (Mono, Duo, Quad, True Polyphonic)
  • Supports MIDI MPE and velocity sensitivity
  • External audio excitation
  • Mod Matrix for real-time parameter control
  • 7 unique synthesis modes
  • 6 mod-able and 6 global effects
Features
Read full description

RingsFX is an AUv3 plugin based on the famous Mutable Instruments Rings, one of the most dedicated and fully-featured Physical Modeling Eurorack modules ever created. At its core is a resonator that needs to be 'excited' or 'strummed' by MIDI input, noise, or external audio excitation. RingsFX emulates vibrations of structures simulated by 3 different synthesis techniques that can be plucked or process external signals: Modal Synthesis, Sympathetic Strings, and Inharmonic Strings. Traditionally, Rings was only monophonic but used a unique approach to polyphony that allowed the previous note to 'ring' out and decay while a new note was played. Rings FX provides these same modes (Mono, Duo, and Quad), but expands it with a true Polyphonic mode. RingsFX also expands the capabilities of the original engine by adding support for velocity sensitivity and MIDI MPE mode. The new polyphonic mode allows RingsFX to play up to 12 notes of true polyphony, depending on the settings. Doing so requires RingsFX to use multiple Rings resonators, but the more true polyphony you use, the more processing power it requires. Running in the traditional Monophonic, Duophonic, or Quadrophonic modes may be preferred in order to keep CPU usage under control. RingsFX has 7 modes in total, by combining the 3 basic modes with additional properties such as chords or specially tuned reverbs. The original hardware also had a secret 'Easter Egg' mode, which in RingsFX is simply calling 'Synthesizer' mode, rumoured to be based on one of the early Korg synthesis methods. This mode supported a number of mutable effects which now work on in all resonator modes. RingsFX also has a Mod-Matrix which allows you to combine the built-in LFOs and FEGs to great effect by manipulating parameters and mutable effects in realtime. Finally, RingsFX can be loaded as an AUv3 effect plugin. Set the Exciter Source to 'INPUT', and you can pass any audio through RingsFX and use this audio as an external exciter. For example, it can be used to great affect on a drum beat to create some crazy rhythms. Use the Output Mix to combine the original audio with the synthesised resonator output to create some stunning effects. Features ○ 7 unique synthesis modes. ○ Supports Mono, Duo, Quad and true polyphony. ○ Supports 2 fluid LFO's per note. ○ Up to 4 FEG's per note. ○ External Exciter modes. ○ White noise Pulse Sequencer. ○ Supports 6 mod-able effects and 6 global effects. ○ Mod Matrix ○ Input and white noise filters. ○ Program Manager with drag and drop. ○ Preset Search and Favourites. ○ Easy export and import of banks and presets. ○ Extensive help manual. ○ Web Transfer for backing up to PC/Mac. ○ MPE Support.

Screenshots

RingsFX4 screens

Verdict

The call

The clearest difference is rating: RingsFX at 4.9 against sqsl Latch's 3.7. RingsFX also leads on review sentiment (100% vs 67%) and update cadence (fortnightly vs every 5 months). On 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

sqsl Latch costs $19.99 and RingsFX $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

RingsFX holds the better App Store score, 4.9 against 3.7. That said, the two scores are not equally well evidenced: RingsFX has 27 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 67% of sqsl Latch's written reviews are positive against 100% of RingsFX's.

UpkeepUpdate frequency

sqsl Latch ships an update every 5 months, RingsFX fortnightly. The most recent releases landed on September 26, 2026 and October 20, 2026 respectively.

Scorecard7 real differences · 3 level
sqsl Latch versus RingsFX: the parameters behind the verdict, then further details
Parametersqsl LatchRingsFX
Price$19.99$14.99 — better
Rating3.7 (3 ratings)4.9 (27 ratings) — better
Positive reviews66.7% of reviews100.0% of reviews — better
Number of ratings327 — better
Update frequencyEvery 5 monthsFortnightly — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPadiPhone, iPad, iPod — better
Requires iOS15.513.0 — better
Further details — not scored
Size4 MB23 MB
Age rating4+4+
DeveloperMichal Macura4Pockets.com

Customer experience

sqsl Latch

All ratings2 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews6 reviews
Positive66.7%
Neutral0.0%
Negative33.3%

RingsFX

All ratings26 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews5 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

sqsl Latch

No in-app purchases

None

RingsFX

No in-app purchases

Questions

Is sqsl Latch free?
sqsl Latch costs $19.99, with no in-app purchases.
Is RingsFX free?
RingsFX costs $14.99, with no in-app purchases.
Which has better reviews, sqsl Latch or RingsFX?
RingsFX is rated higher. sqsl Latch averages 3.7 out of 5 from 3 ratings, while RingsFX averages 4.9 from 27 ratings.
Do sqsl Latch or RingsFX have ads?
Neither sqsl Latch nor RingsFX shows ads.
Which is updated more often, sqsl Latch or RingsFX?
sqsl Latch ships an update every 5 months, and RingsFX fortnightly. Most recently, sqsl Latch was updated on September 26, 2026 and RingsFX on October 20, 2026.

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