Comparison

Secret vs SensorLogger

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

Head to head
About

Secret

Securely send and receive encrypted messages that only the intended recipient can read. Protect your private conversations with end-to-end encryption and a password. Messages are not stored on your device after decryption.

Highlights
  • End-to-end message encryption
  • Password protection for decryption
  • Shake to clear messages
  • Messages not stored on device
  • Supports any language and emoji
  • Multiple language localizations
Features
Read full description

Send messages to your friends and colleagues – encrypted so that only they can read the message. Tap and type your message, and with one tap you can encrypt and then send your message, or copy it to the clipboard for pasting in to another application. Shake to clear your message. Secret – just between you and me... When someone who has Secret installed receives a Secret-encrypted message, they need only click on the message and they are taken straight to Secret where they can decrypt the message with a pre-arranged password. It's as simple as that! Secret uses DES symmetric encryption to keep your messages safe. You can use it anywhere you need to send a message that you don't want others to read. The decrypted message is not stored on your phone, so if someone intercepts or finds your phone, they can't read your messages without knowing the password. Secret works in any language, and even with emoji. Secret is also fully localised in English, French, Japanese, Italian, Greek, Spanish, Malay, Indonesian, German, Korean, and Simplified and Traditional Chinese. Secret – it's the easiest way to secure the messages you send and receive.

About

SensorLogger

Record acceleration, gyroscope, and magnetic field data in real-time or at higher frequencies. Export your sensor readings as a CSV file for further analysis. Optimize data collection by toggling visualization settings.

Highlights
  • Log acceleration, gyroscope, and magnetic field
  • Synchronous sensor measurement
  • Real-time data visualization
  • Adjustable sampling frequency
  • Export data as CSV file
Features
Read full description

A logger App that can measure acceleration, gyroscope, and magnetic field synchronously, then export as a CSV file. The measured values can be visualized in real-time by enabling "Realtime visualization". On the other hand, when you want to measure at a more accurate frequency, disabling "Realtime visualization" is preferred. Also, if the sampling rate is set too high, the same value may be sampled many times depending on the hardware specifications.

Screenshots

Secret4 screens
SensorLogger3 screens

Verdict

The call

The clearest difference is price: Secret at Free against SensorLogger's $0.99. Secret also leads on device support (3 vs 1). SensorLogger's advantage is rating (4.5 vs 3.0) and update cadence (every 3 weeks vs every 10 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

Secret is free to download; SensorLogger costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

SensorLogger holds the better App Store score, 4.5 against 3.0. That said, the two scores are not equally well evidenced: SensorLogger has 10 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 55% of Secret's written reviews are positive against 78% of SensorLogger's.

UpkeepUpdate frequency

Secret ships an update every 10 months, SensorLogger every 3 weeks. The most recent releases landed on November 1, 2026 and November 7, 2026 respectively.

Scorecard7 real differences · 3 level
Secret versus SensorLogger: the parameters behind the verdict, then further details
ParameterSecretSensorLogger
PriceFree — better$0.99
Rating3.0 (1 ratings)4.5 (10 ratings) — better
Positive reviews54.5% of reviews78.3% of reviews — better
Number of ratings110 — better
Update frequencyEvery 10 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, Mac — betteriPhone
Requires iOS26.016.0 — better
Further details — not scored
Size13 MB2 MB
Age rating4+4+
Developercurmi.comKazumasa Wakamori

Customer experience

Secret

All ratings1 ratings
Positive0.0%
Neutral100.0%
Negative0.0%
Written reviews22 reviews
Positive54.5%
Neutral22.7%
Negative22.7%

SensorLogger

All ratings11 ratings
Positive90.9%
Neutral0.0%
Negative9.1%
Written reviews23 reviews
Positive78.3%
Neutral17.4%
Negative4.3%

In-app purchases

None

Secret

No in-app purchases

None

SensorLogger

No in-app purchases

Questions

Is Secret free?
Secret is free to download, with no in-app purchases.
Is SensorLogger free?
SensorLogger costs $0.99, with no in-app purchases.
Which has better reviews, Secret or SensorLogger?
SensorLogger is rated higher. Secret averages 3.0 out of 5 from 1 ratings, while SensorLogger averages 4.5 from 10 ratings.
Do Secret or SensorLogger have ads?
Neither Secret nor SensorLogger shows ads.
Which is updated more often, Secret or SensorLogger?
Secret ships an update every 10 months, and SensorLogger every 3 weeks. Most recently, Secret was updated on November 1, 2026 and SensorLogger on November 7, 2026.

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