Comparison

E4 Flex vs Journal & Diary

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

Head to head
About

E4 Flex

This app enables field technicians to connect to and manage E4 Flex readers via Bluetooth Low Energy. It allows for sending commands and receiving responses, facilitating configuration and testing of the readers.

Highlights
  • Connect to E4 Flex readers via BLE
  • Send commands to readers
  • Receive responses from readers
  • Configure E4 Flex readers
  • Test E4 Flex readers
Read full description

The E4 Flex allows users to find and connect to E4 Flex readers in close proximity using the BLE interface. The user can send commands and receive responses as if they were connected using the typical serial or network connect. This app is a new tool for field technicians to configure and test the E4 Flex Reader.

About

Journal & Diary

This app provides a simple and intuitive platform for daily journaling and mood tracking. Its minimalist design focuses on capturing memories without distractions, allowing users to easily record thoughts and monitor emotional patterns over time.

Highlights
  • Daily journaling with minimalist design
  • Automatic grouping of entries by date and time
  • Emoji-based mood tracking
  • Reflection on memories over time
  • Intuitive and polished user experience
Features
Read full description

After a heart-breaking breakup, I looked back and realized I had missed the small signs. If I had reflected on everyday life more actively, I might have noticed what was slowly building. That is why I created Memoiri: a private journal and diary for daily thoughts, moods, memories, and the moments that shape your life. Memoiri is designed to feel calm, focused, and personal. Write a quick note, save a longer reflection, add photos, record voice memories, sketch an idea, or simply capture how the day felt. Your entries are grouped by day and time, so your story stays easy to browse. Reflection is built into the experience. Track your mood with simple emojis, revisit past memories, search old entries, and notice patterns across days, weeks, and months. With Memoiri, you can: - Write daily journal and diary entries without distraction - Save memories with text, photos, voice notes, and sketches - Track mood and emotional patterns over time - Search entries by words, dates, moods, places, people, and media - Protect private thoughts with passcode and Face ID support - Build a gentle journaling habit with Focus Sessions Memoiri is not about writing perfectly. It is about noticing your life while you are living it. Download Memoiri and start keeping a meaningful record of your days. Subscription and legal information: Memoiri may offer auto-renewable subscriptions. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Memoiri Terms: https://memoiri.app/terms-conditions Privacy Policy: https://memoiri.app/privacy-policy

Screenshots

E4 Flex3 screens
Journal & Diary4 screens

Verdict

The call

The clearest difference is in-app purchases: E4 Flex at none against Journal & Diary's 1. E4 Flex also leads on rating (5.0 vs 4.8) and iOS requirement (13.1 vs 26.1). Journal & Diary's advantage is update cadence (fortnightly vs every 21 months) and ratings volume (22 vs 1). On price, ads 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. Journal & Diary sells 1 in-app purchase, starting at $3.99 per month. E4 Flex asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

E4 Flex holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Journal & Diary has 22 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

E4 Flex ships an update every 21 months, Journal & Diary fortnightly. The most recent releases landed on September 16, 2026 and September 23, 2026 respectively.

Scorecard6 real differences · 4 level
E4 Flex versus Journal & Diary: the parameters behind the verdict, then further details
ParameterE4 FlexJournal & Diary
PriceFreeFree
Rating5.0 (1 ratings) — better4.8 (22 ratings)
Positive reviews—85.7% of reviews
Number of ratings122 — better
Update frequencyEvery 21 monthsFortnightly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFreemium
DevicesiPhone, iPodiPhone, iPad, Apple Watch — better
Requires iOS13.1 — better26.1
Further details — not scored
Size1 MB31 MB
Age rating4+4+
DeveloperPaul HamelMohammad Elzahaby

Customer experience

E4 Flex

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Journal & Diary

All ratings22 ratings
Positive90.9%
Neutral4.5%
Negative4.5%
Written reviews14 reviews
Positive85.7%
Neutral14.3%
Negative0.0%

In-app purchases

None

E4 Flex

No in-app purchases

1 purchases

Journal & Diary

Subscriptions1
  • memoiri+$3.991 Month

Questions

Is E4 Flex free?
E4 Flex is free to download, with no in-app purchases.
Is Journal & Diary free?
Journal & Diary is free to download, with in-app purchases available.
Which has better reviews, E4 Flex or Journal & Diary?
E4 Flex is rated higher. E4 Flex averages 5.0 out of 5 from 1 ratings, while Journal & Diary averages 4.8 from 22 ratings.
Do E4 Flex or Journal & Diary have ads?
Neither E4 Flex nor Journal & Diary shows ads.
Which is updated more often, E4 Flex or Journal & Diary?
E4 Flex ships an update every 21 months, and Journal & Diary fortnightly. Most recently, E4 Flex was updated on September 16, 2026 and Journal & Diary on September 23, 2026.

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