Comparison

Lottery Probability Calculator vs ContactExport+

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

Head to head
About

Lottery Probability Calculator

Features
Read full description

It is an application that calculates the probability of winning by lottery or gacha. Enter the probability of winning and how many times you will draw, and you can calculate the probability of winning more than once. Probabilities can also be entered as percentages and fractions. ・Probability of winning the lottery Calculate the probability of winning from the appearance rate and the number of trials. You can calculate the probability of winning more than once when you draw 100 times. Since the probability of obtaining 0 to 4 times and 5 times or more is also displayed, you can also check the probability of obtaining multiple times. ・Number of times to win the lottery Calculate the number of trials required to draw a hit from the appearance rate and acquisition probability. You can calculate how many times you have to draw a lottery with a probability of winning 0.1% to get a probability of 80% or more. The number of times in 5% increments for each probability of winning is also displayed in a list, so you can easily check the number of times you need. ・Probability of getting everything When there are multiple prizes in gacha etc., calculate the probability of getting all of them by subtracting the specified number of times. You can easily check the probability of completing the lottery with 10 types of prizes when you draw 30 times.

About

ContactExport+

Features
Read full description

Back up every contact on your iPhone in one tap. Export as a clean CSV or vCard file — entirely offline, 100% private. EXPORT • One-tap export to CSV or vCard • Excel-safe CSV presets (Excel, Google Sheets, Standard) • Selective export: all contacts, phone only, email only, or both • Full preview before you share • Save to Files, AirDrop, email, or any app via share sheet CONTACT HEALTH • See which contacts are missing phone numbers or emails • Duplicate detection finds contacts with matching names or numbers • Track contact changes between exports STAY PROTECTED • Export history tracks every backup you’ve made • Scheduled backup reminders (weekly, monthly, or quarterly) • Privacy-first: your data never leaves your device unless you share it PRICING • Lifetime unlock available — pay once, keep forever ($4.99) • Or subscribe monthly ($1.99) or yearly ($9.99) • 7-day free trial on all plans • Subscription automatically renews unless cancelled at least 24 hours before the end of the current period • Manage subscriptions in Settings › Apple ID › Subscriptions Privacy Policy: https://hatchingpoint.com/contactexport/privacypolicy Terms of Use: https://hatchingpoint.com/contactexport/terms

Screenshots

Lottery Probability Calculator4 screens
ContactExport+4 screens

Verdict

The call

The clearest difference is in-app purchases: Lottery Probability Calculator at none against ContactExport+'s 2. Lottery Probability Calculator also leads on iOS requirement (13.0 vs 17.0). ContactExport+'s advantage is update cadence (every 5 weeks vs every 10 months). 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. ContactExport+ sells 2 in-app purchases, starting at $3.99 per month. Lottery Probability Calculator asks for nothing beyond the download.

UpkeepUpdate frequency

Lottery Probability Calculator ships an update every 10 months, ContactExport+ every 5 weeks. The most recent releases landed on October 27, 2026 and October 28, 2026 respectively.

Scorecard3 real differences · 3 level
Lottery Probability Calculator versus ContactExport+: the parameters behind the verdict, then further details
ParameterLottery Probability CalculatorContactExport+
PriceFreeFree
Update frequencyEvery 10 monthsEvery 5 weeks — better
AdsYesYes
In-app purchasesNo — betterYes
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better17.0
Further details — not scored
Size17 MB16 MB
Age rating4+4+
DeveloperKouji YamauchiHatching Point LLC

In-app purchases

None

Lottery Probability Calculator

No in-app purchases

2 purchases

ContactExport+

Subscriptions2
  • Monthly Premium3 Days trial$3.991 Month
  • Yearly Premium3 Days trial$19.991 Year

Questions

Is Lottery Probability Calculator free?
Lottery Probability Calculator is free to download, with no in-app purchases.
Is ContactExport+ free?
ContactExport+ is free to download, with in-app purchases available.
Do Lottery Probability Calculator or ContactExport+ have ads?
Both Lottery Probability Calculator and ContactExport+ show ads.
Which is updated more often, Lottery Probability Calculator or ContactExport+?
Lottery Probability Calculator ships an update every 10 months, and ContactExport+ every 5 weeks. Most recently, Lottery Probability Calculator was updated on October 27, 2026 and ContactExport+ on October 28, 2026.

Other comparisons