Comparison

TMR Memory Test vs Make Chirps

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

Head to head
About

TMR Memory Test

Features
Read full description

TMR Memory Test application is used for conducting targeted memory reactivation (TMR) experiment in education purposes. Newly acquired information is stabilized into long-term memory through the process of consolidation. Memories are not static; rather, they are constantly updated via reactivation, and this reactivation occurs preferentially during Slow-Wave Sleep. This application uses method called targeted memory reactivation, whereby auditory cues that were previously associated with learning are re-presented during sleep, triggering recall of stored memories and through this strengthening these memories.

About

Make Chirps

Explore the physics of gravitational waves through interactive simulations and visualizations. Understand black hole mergers and their impact on spacetime with dynamic animations and auditory experiences. Learn about LIGO's pioneering work through educational insights.

Highlights
  • Physics simulation of black hole mergers
  • Waveform plots and spectrogram visualizations
  • Auditory experience of gravitational waves
  • Dynamic animations of black hole collisions
  • Educational insights on LIGO and cosmic phenomena
Features
Read full description

This educational app displays gravitational wave chirps created by mergers of massive black holes in several different ways, giving users an intuitive understanding of these exotic disturbances of space-time itself produced by cataclysmic events in distant galaxies. FEATURES: • Simulation: Experience the intricate behavior of gravitational waves through physics simulation of inspiralling black holes that merge to form a final black hole which then “shakes off” its excess energy. • Visualizations: See the essence of gravitational waves via waveform plots, frequency evolutions, and spectrograms, to understand the patterns and how they depend on black hole masses. • Auditory Experience: Listen closely as you hear the evolution of gravitational waves, detecting the characteristic increase in time in strength and frequency. Try varying masses to see how pitch is affected. • Dynamic Animations: Witness the captivating dance of black holes in collision animations. Explore the propagation of these waves through space-time with mesmerizing spiral animations. • Educational Insights: Gain a comprehensive understanding of gravitational waves and the pioneering work of LIGO through informative text pages, enhancing your knowledge of these cosmic phenomena. COMPATIBILITY Compatible with iPhone and iPad, iOS 16 or later. ACKNOWLEDGEMENT Supported by the National Science Foundation with grant PHY-2110181.

Screenshots

TMR Memory Test3 screens
Make Chirps4 screens

Verdict

The call

The clearest difference is update cadence: TMR Memory Test at every 3 weeks against Make Chirps's every 3 months. TMR Memory Test also leads on iOS requirement (12.0 vs 16.0). On price, ads, in-app purchases and device support 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.

UpkeepUpdate frequency

TMR Memory Test ships an update every 3 weeks, Make Chirps every 3 months. The most recent releases landed on October 26, 2026 and October 30, 2026 respectively.

Scorecard2 real differences · 7 level
TMR Memory Test versus Make Chirps: the parameters behind the verdict, then further details
ParameterTMR Memory TestMake Chirps
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 3 weeks — betterEvery 3 months
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS12.0 — better16.0
Further details — not scored
Size19 MB30 MB
Age rating4+4+
DeveloperBackyard BrainsJohn Keith Riles

In-app purchases

None

TMR Memory Test

No in-app purchases

None

Make Chirps

No in-app purchases

Questions

Is TMR Memory Test free?
TMR Memory Test is free to download, with no in-app purchases.
Is Make Chirps free?
Make Chirps is free to download, with no in-app purchases.
Do TMR Memory Test or Make Chirps have ads?
Neither TMR Memory Test nor Make Chirps shows ads.
Which is updated more often, TMR Memory Test or Make Chirps?
TMR Memory Test ships an update every 3 weeks, and Make Chirps every 3 months. Most recently, TMR Memory Test was updated on October 26, 2026 and Make Chirps on October 30, 2026.

Other comparisons