Comparison

PDF Editor vs When to Post AI

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

Head to head
About

PDF Editor

Features
Read full description

Edit any PDF with ease using our app, the complete solution for working with documents on your device. Make quick changes, add signatures, fill out forms, highlight text, merge pages, and export your files anywhere in seconds. Main Features: • Sign PDFs effortlessly • Merge, split, and reorder pages • Convert photos and files into PDF format • Secure your documents with passwords • Save, export, and share instantly Why You’ll Love It: • Perfect for school, work, and business • Fast editing tools with a clean, simple interface • Create professional-looking PDFs on the go • No computer required — do everything from your phone Subscription Details: • Weekly Plan: $4.99/week with a 3-day trial • Yearly Plan: $19.99/year Payment will be charged to your iTunes Account at confirmation of purchase. Subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours before the subscription ends. Manage or cancel your subscription anytime in your iTunes Account settings. Any unused portion of a free trial will be forfeited when a subscription is purchased. Privacy Policy - https://docs.google.com/document/d/1vmFO5PWnSozhN8Zv5_yricK8_UPKE5koKaoErI2vqoY/edit?usp=sharing Terms of Use - https://docs.google.com/document/d/1xWa3KIqYDTJ5TdQtuhkpJdd6xMI1c7gm1U8qCJvzvV4/edit?usp=sharing

About

When to Post AI

This app helps Instagram and TikTok creators optimize their posting times for maximum engagement. It uses AI to analyze audience activity and provides personalized schedules and reminders, eliminating guesswork.

Highlights
  • AI-driven audience activity analysis
  • Personalized weekly posting schedule
  • Push reminders for peak engagement
  • Clear reasoning for time recommendations
  • Privacy-first approach, no logins required
  • Today and Week view for posting windows
Features
Read full description

Stop guessing when to post. When to Post AI is your calm coach for Instagram and TikTok creators who want peak engagement without the stress. HOW IT WORKS - Pro features require a paid subscription • Add your Instagram or TikTok handle — no logins, no password • Our AI analyzes when your audience is actually active • Get a personalized weekly posting schedule (Pro users only) • Receive push reminders at peak engagement windows (Pro users only) • See clear reasoning for every recommended time (Pro users only) WHY CREATORS LOVE IT • Posting at the right time can lift engagement dramatically • Privacy-first — we never store follower data or track you across apps • Works for everyone: micro-influencers, small businesses, hobby accounts • One-tap to set your plan and forget the guesswork YOUR PLAN AT A GLANCE (Pro feature) • Today tab — tonight's next posting window with a countdown • Week tab — every window, every day, at a glance • AI Coach — explains why this time, in plain English Stop guessing. Start posting smarter. EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy: https://when-to-post-99cents.web.app/privacy.html

Screenshots

PDF Editor3 screens
When to Post AI4 screens

Verdict

The call

PDF Editor and When to Post AI are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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. PDF Editor sells 8 in-app purchases, starting at $4.99 per 7 days and When to Post AI sells 2 in-app purchases, starting at $7.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

PDF Editor ships an update every 2 days, When to Post AI daily. The most recent releases landed on September 30, 2026 and October 3, 2026 respectively.

ScorecardNo meaningful differences
PDF Editor versus When to Post AI: the parameters behind the verdict, then further details
ParameterPDF EditorWhen to Post AI
PriceFreeFree
Rating—4.8 (6 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—6 — better
Update frequencyEvery 2 daysDaily — better
AdsNoNo
In-app purchasesYesYes
Monetization—Freemium
DevicesiPhoneiPhone
Requires iOS16.0 — better17.1
Further details — not scored
Size22 MB21 MB
Age rating4+4+
DeveloperHnat DoroshJack Solomon

In-app purchases

8 purchases

PDF Editor

Subscriptions8
  • Smart PDF Editor3 Days trial$4.997 Days
  • Smart PDF Editor$4.997 Days
  • Smart PDF Editor$9.991 Year
Show 5 more
  • Smart PDF Editor3 Days trial$14.993 Months
  • Smart PDF Editor$19.991 Year
  • Smart PDF Editor3 Days trial$19.991 Year
  • Smart PDF Editor3 Days trial$29.991 Year
  • Smart PDF Editor$29.991 Year
2 purchases

When to Post AI

Subscriptions2
  • Pro Monthly$7.991 Month
  • Pro Yearly7 Days trial$29.991 Year

Questions

Is PDF Editor free?
PDF Editor is free to download, with in-app purchases available.
Is When to Post AI free?
When to Post AI is free to download, with in-app purchases available.
Do PDF Editor or When to Post AI have ads?
Neither PDF Editor nor When to Post AI shows ads.
Which is updated more often, PDF Editor or When to Post AI?
PDF Editor ships an update every 2 days, and When to Post AI daily. Most recently, PDF Editor was updated on September 30, 2026 and When to Post AI on October 3, 2026.

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