Comparison

iPlonge vs Contact.s Back Up

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

Head to head
About

iPlonge

This app provides an instant dive time calculator based on MN90 tables. It displays ascent times and GPS data for quick dive planning. It is a supplementary tool and does not replace formal dive table training.

Highlights
  • Instant dive time calculation
  • MN90 table based planning
  • Ascent time display
  • GPS data integration
  • Simple value display
Features
Read full description

Utilisez notre calculateur de temps de plongées, en un instant vous planifiez votre plongées, notre application est basées sur les tables MN90. -affichage instantanée des résultats -affichage simple des valeurs -affichage du temps de remontée et du GPS note: Cette application ne dispense en rien la formation sur l'utilisation des tables de plongée MN90.

About

Contact.s Back Up

Easily back up, restore, and sync all your phone contacts with a single tap. Store them locally or in cloud services like Google Drive and iCloud. Export contacts to spreadsheets for organization and analysis.

Highlights
  • One-tap contact backup
  • Cloud sync (Google Drive, iCloud)
  • Contact restore functionality
  • Export contacts to spreadsheets
  • Merge, filter, and remove contacts
  • Auto backup function
Features
Read full description

Backup all your contacts in just a single tap with an easy tool that will help you to save all the contacts in your agenda to never lose a phone number again. The easiest way to restore, backup, and sync your contacts right to the palm of your hand. • Update the contacts you have at any time of the day with just a single tap. • Backup all the contacts in your agenda right to your local memory and make sure you won't lose them again. • Backup your contacts in Google Drive, iCloud, Gmail, or Exchange to keep all the information in a safe place while reducing the number of contacts you save in your device’s memory. • Restore your contacts whenever you need it. • Export your contacts to spreadsheets, and organize, store, or analyze the information you have on them at any time. • Merge, filter, and remove the contacts you have saved in your phone in just a couple of steps. • Share your whole list of contacts in just seconds with our in-app email sharing functionality. • Find your contacts much easier with the large list of filter options we have included for you to find people faster. • Include all the information and notes you want to add to each contact and create your database right in your device. • Don’t worry about updating your contacts manually, just activate our auto backup function, and let us help you with that. • Look for contacts you have added or deleted in your backup history tab. Don’t lose those important contacts, boost your device’s memory, and organize all your important information in one single easy-to-us Become a PRO user: 1. Title of publication or service:Contacts PRO. 2. Length of Subscription & Price of Subscription, price per unit if appropriate: - Weekly(3 Days Free Trial) 3. Prices of Subscription: - 3 day free trial then $4.99 per week - 3 day free trial then $9.99 per month - $49.99 per year 4. Payment will be charged to iTunes Account at confirmation of purchase 5. Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. You can turn of the auto-renew subscription from iPhone setting 6. Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal 7. Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase. 8. Privacy Policy: https://insanedevelopersllc.wordpress.com/privacy-policy/ 9. Terms of use: https://insanedevelopersllc.wordpress.com/terms-of-use/

Screenshots

iPlonge2 screens
Contact.s Back Up3 screens

Verdict

The call

The clearest difference is in-app purchases: iPlonge at none against Contact.s Back Up's 9. iPlonge also leads on review sentiment (100% vs 74%) and iOS requirement (7.0 vs 15.0). Contact.s Back Up's advantage is update cadence (fortnightly vs every 6 weeks). 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. Contact.s Back Up sells 9 in-app purchases, starting at $3.99 per month. iPlonge asks for nothing beyond the download.

UpkeepUpdate frequency

iPlonge ships an update every 6 weeks, Contact.s Back Up fortnightly. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

Scorecard5 real differences · 5 level
iPlonge versus Contact.s Back Up: the parameters behind the verdict, then further details
ParameteriPlongeContact.s Back Up
PriceFreeFree
Rating—4.5 (1.3K ratings) — better
Positive reviews100.0% of reviews — better73.6% of reviews
Number of ratings—1.3K — better
Update frequencyEvery 6 weeksFortnightly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS7.0 — better15.0
Further details — not scored
Size4 MB61 MB
Age rating4+4+
DeveloperTIWAS COMPANYSymon Johnson

Customer experience

iPlonge

Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Contact.s Back Up

All ratings1,246 ratings
Positive87.0%
Neutral4.3%
Negative8.7%
Written reviews163 reviews
Positive73.6%
Neutral4.3%
Negative22.1%

Bugs and requests

iPlonge

Not enough reviews yet to summarise bugs or requests.

Contact.s Back Up

Reported bugs

4 issues
  • Login/signup issues
  • Disappearing contact information
  • Backup and restore not working as expected
  • Incompatible with older devices

Requested features

5 requests
  • Dark mode option
  • Sync with Gmail contacts
  • Restore deleted contacts
  • Improved backup and restore process
  • Better error handling and warnings

In-app purchases

None

iPlonge

No in-app purchases

9 purchases

Contact.s Back Up

Subscriptions8
  • Contacts Monthly Subscription3 Days trial$3.991 Month
  • Contacts Weekly Subscription3 Days trial$4.997 Days
  • Premium Monthly$4.991 Month
Show 5 more
  • Weekly$4.997 Days
  • Monthly$9.991 Month
  • Premium Monthly1 Month trial$19.991 Month
  • Contacts Yearly Subscription1 Year trial$49.991 Year
  • Yearly$49.991 Year
One-time1
  • Unlock Everything$19.99

Questions

Is iPlonge free?
iPlonge is free to download, with no in-app purchases.
Is Contact.s Back Up free?
Contact.s Back Up is free to download, with in-app purchases available.
Do iPlonge or Contact.s Back Up have ads?
Neither iPlonge nor Contact.s Back Up shows ads.
Which is updated more often, iPlonge or Contact.s Back Up?
iPlonge ships an update every 6 weeks, and Contact.s Back Up fortnightly. Most recently, iPlonge was updated on November 1, 2026 and Contact.s Back Up on November 3, 2026.

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