Comparison

TruID vs Simple Hidden Note

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

Head to head
About

TruID

This client application generates One-Time Passwords (OTPs) for secure identification with an organization's critical systems. It supports multiple profiles and can operate in synchronized or challenge modes for enhanced security.

Highlights
  • One-Time Password (OTP) generation
  • Secure identification for critical systems
  • Multiple profile support
  • Synchronized mode OTP generation
  • Challenge mode OTP generation
  • Online and manual activation
Features
Read full description

TruID is a client application that generates One-Time Passwords (OTP). OTPs are used to provide secure identification for an organization's mission-critical systems, such as sale and e-mail systems. TruID supports multiple profiles. Each profile can be set in challenge or synchronized mode. When run in synchronized mode, the OTP is generated after the user enters the PIN. In challenge mode the user has to enter a challenge, in addition to the PIN, to generate the OTP. The challenge is generated and provided by the TruID server. TruID requires that your organization/provider runs PortWise Authentication Server. PortWise Authentication Server supports the radius protocol. PortWise Authentication Server also provides web service api:s to enable integration with any application that needs strong authentication to authenticate users. On-line activation: When activating your account using a one-time activation key, the key is generated by the PortWise Authentication Server. The activation key and url is sent to the user via email or SMS. To activate your TruID client on-line, simply click on the url in your iOS device and follow the instructions. Manual activation: When activating your account a seed value will be generated on the PortWise Authentication Server. The seed value needs to be entered in the TruID client for the profile to be activated.

About

Simple Hidden Note

Features
Read full description

Simple Hidden Note is a lightweight, free and offline note taking app. Simply and only made for Text note taking. By default plain text, with minimal formatting possible if required. The main feature is the hidden part. Notes are hidden by default. Creating a new note works the same as accessing an existing note: you authenticate then enter any pin. The collection of single notes will be available under that pin then. The app automatically exits hidden notes when in the background. Alternatively you can "unlock" any note collection to make it visible and accessible from the app home screen. [Features] • One text note collection per entered pin. Any pin. • Unlocking notes means usability like a simple text note editor. • Biometric authentication before pin entry. • Light and dark modes • Note collection import, export and sharing • No cost, no account, no advertising Be aware that notes are not encrypted by the app though. The app also works together with our Containd app by linking each inventory item to a pin/ note collection in Simple Hidden Note. And that note then links back to Containd App to the respective item. Just in case more text is required.

Screenshots

TruID1 screens
Simple Hidden Note4 screens

Verdict

The call

The clearest difference is update cadence: Simple Hidden Note at daily against TruID's every 17 months. TruID's advantage is iOS requirement (11.0 vs 15.1). 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

TruID ships an update every 17 months, Simple Hidden Note daily. The most recent releases landed on September 22, 2026 and October 4, 2026 respectively.

Scorecard2 real differences · 8 level
TruID versus Simple Hidden Note: the parameters behind the verdict, then further details
ParameterTruIDSimple Hidden Note
PriceFreeFree
Rating1.0 (2 ratings) — better—
Positive reviews16.7% of reviews—
Number of ratings2 — better—
Update frequencyEvery 17 monthsDaily — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.0 — better15.1
Further details — not scored
Size1 MB35 MB
Age rating4+4+
DeveloperPortWiseNext Level Order Engineering UG (haftungsbeschrankt)

In-app purchases

None

TruID

No in-app purchases

None

Simple Hidden Note

No in-app purchases

Questions

Is TruID free?
TruID is free to download, with no in-app purchases.
Is Simple Hidden Note free?
Simple Hidden Note is free to download, with no in-app purchases.
Do TruID or Simple Hidden Note have ads?
Neither TruID nor Simple Hidden Note shows ads.
Which is updated more often, TruID or Simple Hidden Note?
TruID ships an update every 17 months, and Simple Hidden Note daily. Most recently, TruID was updated on September 22, 2026 and Simple Hidden Note on October 4, 2026.

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