# Flexcil Note & Good PDF Reader vs Strap Sentry

The clearest difference is in-app purchases: Strap Sentry at none against Flexcil Note & Good PDF Reader's 10. Strap Sentry also leads on ads (none vs shown). Flexcil Note & Good PDF Reader's advantage is update cadence (every 5 days vs every 3 months) and iOS requirement (15.0 vs 17.4). On price and device support there is nothing between them.

Both are free to download. Flexcil Note & Good PDF Reader sells 10 one-off in-app purchases. Strap Sentry asks for nothing beyond the download.

Flexcil Note & Good PDF Reader ships an update every 5 days, Strap Sentry every 3 months. The most recent releases landed on November 11, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | Flexcil Note & Good PDF Reader | Strap Sentry |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (413 ratings)](https://appshunter.io/ios/app/flexcil-note-and-good-pdf-reader/id1531466462/reviews)** | — |
| Number of ratings | **413** | — |
| Positive reviews | 59.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 5 days** | Every 3 months |
| Monetization | Free with in-app purchases | — |
| Size | 247 MB | 14 MB |
| Requires iOS | **15.0** | 17.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Flexcil Inc.](https://appshunter.io/developer/1090873688) | [Strap Sentry Technologies, LLC](https://appshunter.io/developer/1791284564) |

## What reviewers say

### Flexcil Note & Good PDF Reader

[App page](https://appshunter.io/ios/app/flexcil-note-and-good-pdf-reader/id1531466462)

This app is a comprehensive note-taking and PDF reader designed for Apple devices. It allows users to edit PDFs, annotate documents with gestures, and organize notes and study materials efficiently. Features include audio recording, multitasking, and cloud synchronization for seamless access across devices.

**Highlights:** Edit and annotate PDF pages, Gesture-based highlighting and text capture, Audio recording and playback linked to notes, Cloud sync across devices, Multitasking with split-screen view, Customizable bullet journaling templates, Apple Pencil enhanced features

**Features:** macOS Compatibility

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Upgrade product for old users | Free | one-time |
| Premium | $9.99 | one-time |
| Flexcil Standard | $9.99 | one-time |
| 2021-2022 Color Planner | $11.99 | one-time |
| Flexcil NEW Design Planner 22 | $11.99 | one-time |
| Premium & Toolbar Skin Pack | $12.99 | one-time |
| Hello Kitty Planner 2022 | $13.99 | one-time |
| Standard & 21-22 Planner Pack | $14.99 | one-time |
| Standard & Design Planner Pack | $14.99 | one-time |
| Standard & 2023 Planner Pack | $14.99 | one-time |

**What reviewers like**

- 🚀 Best Apps for STUDENTS!!! 😀😀
- 👍 Love this app
- 🚀 Powerful multi-page PDF viewer
- 👍 Great for studying
- 👍 Excellent app for note taking

**What reviewers complain about**

- 🐛 Crashes and performance issues
- 🐛 Syncing and backup problems
- 🐛 Buggy handwriting recognition
- 🐛 Unreliable palm rejection
- 🐛 Missing key features from previous version

**Reported bugs**

- Sudden data loss and file deletion
- Inability to restore purchases
- Frequent app crashes and freezes
- Inconsistent behavior of undo/redo functions
- Annotations not exporting correctly

**Requested features**

- Add iCloud sync and backup
- Improve handwriting search and recognition
- Bring back reading mode and one-page scrolling
- Add more pen and brush options
- Allow customizing notebook paper styles


### Strap Sentry

[App page](https://appshunter.io/ios/app/strap-sentry/id6740725851)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Flexcil Note & Good PDF Reader free?

Flexcil Note & Good PDF Reader is free to download, with in-app purchases available.

### Is Strap Sentry free?

Strap Sentry is free to download, with no in-app purchases.

### Do Flexcil Note & Good PDF Reader or Strap Sentry have ads?

Flexcil Note & Good PDF Reader shows ads; Strap Sentry does not.

### Which is updated more often, Flexcil Note & Good PDF Reader or Strap Sentry?

Flexcil Note & Good PDF Reader ships an update every 5 days, and Strap Sentry every 3 months. Most recently, Flexcil Note & Good PDF Reader was updated on November 11, 2026 and Strap Sentry on November 8, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*