LFunCalc vs PDF Mpjex
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
LFunCalc
Read full descriptionHide full description
LFunCalc is a function calculator that formulas are displayed and entered as a list. Just after a formula is entered, the result is displayed without tapping enter key. A formula name is assigned to each input line and can be referenced as a variable in the following formulas. When a formula is changed, the value of the other formula referencing it is updated too. LFunCalc is also useful as a tool of parameter study. Note) LFunCalc is not a spreadsheet application.
PDF Mpjex
This app allows you to create and edit PDF documents on your iPhone and iPad. Features include scanning, merging, reordering, and protecting PDFs with passwords. You can also extract pages, images, and text from existing documents.
- Scan documents
- Create PDF from photos/web
- Merge and extract PDFs
- Delete, rotate, reorder pages
- Password protect PDFs
- Extract images and pages
Read full descriptionHide full description
PDF Mpjex is a PDF maker and editor and PDF Scanner app on iPhone & iPad. - PDF maker • Scan Document • Create PDF With Photos • Create Blank PDF • Create PDF With Web • Import From Files • Merge PDF files • Extract PDF - PDF Editor • Delete Pages • Rotate Pages • Reorder Pages • Insert Blank Page • Insert From Photos • Insert From File • Markup • Extract PDF pages • Password protect a PDF • Extract PDF images : png jpg Standard Apple Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: LFunCalc at none against PDF Mpjex's 3. LFunCalc also leads on ads (none vs shown) and iOS requirement (13.2 vs 15.0). PDF Mpjex's advantage is update cadence (every 6 weeks vs every 5 months). On price 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
Both are free to download. PDF Mpjex sells 3 in-app purchases, starting at $0.99 per month. LFunCalc asks for nothing beyond the download.
LFunCalc ships an update every 5 months, PDF Mpjex every 6 weeks. Both last shipped on November 3, 2026.
| Parameter | LFunCalc | PDF Mpjex |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.8 (325 ratings) — better |
| Positive reviews | — | 97.3% of reviews |
| Number of ratings | — | 325 — better |
| Update frequency | Every 5 months | Every 6 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 13.2 — better | 15.0 |
| Further details — not scored | ||
| Size | 46 MB | 26 MB |
| Age rating | 4+ | 17+ |
| Developer | NOBORU IMAI | Beijing Yima Network Technology Co., Ltd. |
Bugs and requests
LFunCalc
Not enough reviews yet to summarise bugs or requests.
PDF Mpjex
Reported bugs
1 issue- 🐛 App crashes when viewing drawings
Requested features
2 requests- 💡 Add automatic table of contents generation
- 💡 Ability to scan up to 24 pages at once, then merge
In-app purchases
LFunCalc
No in-app purchases
PDF Mpjex
- PDF Editor & Maker Pro Monthly$0.991 Month
- PDF Editor & Maker Pro Yearly$9.991 Year
- PDF Editor & Maker Pro$4.99
