AI Central vs PDF Toolbox
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
AI Central
This app acts as a personal AI assistant, capable of assisting with a wide range of tasks including writing, language practice, research, and creative endeavors. Get instant answers to your questions and enjoy human-like conversations on any topic.
- AI-powered writing assistance
- Language practice and translation
- Information retrieval and research
- Creative content generation
- Human-like conversational chat
- Problem-solving for math and coding
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Introducing AI Central, the personal AI assistant that's here to help you with anything you need. AI Central is a versatile app that can assist you with a wide range of tasks, including writing, language practice, research, and more. ASK ANYTHING AI Central can help you with a diverse set of tasks, such as: Composing stories, poems, song lyrics, and scripts Practicing and translating languages Finding information on any topic Discovering new recipes to try Telling dad jokes to brighten your day Planning a trip to your dream destination Solving complex math equations and coding problems INSTANT ANSWERS Thanks to AI Central's powerful AI capabilities, you can get instant answers to any question you have. Whether you want to know about a historical event, a scientific fact, or a pop culture reference, AI Central has the knowledge you need at your fingertips. EFFORTLESS WRITING AI Central's AI-powered writing assistant can help you generate ideas, create outlines, and even compose entire paragraphs. Whether you're working on a school project, a business proposal, or a creative writing piece, AI Central can make the writing process effortless for you. CREATIVE ASSISTANCE With AI Central, you can unleash your creativity and write anything you want. Here are some examples of creative tasks you can ask AI Central to help you with: Write a love poem in the style of Pablo Neruda Create a short story with a surprise twist ending Write a song in the style of your favorite artist LANGUAGE PRACTICE AI Central's multilingual capabilities mean that you can chat in any language you want. Whether you want to practice your language skills or translate a text, AI Central can help you with it. AI Central can act as your language teacher and improve your language skills in no time. TOPIC DISCUSSION AI Central is always up for a chat, no matter what topic you want to discuss. Whether you're interested in sports, politics, science, or anything in between, AI Central is here to listen to you and provide insightful responses. HUMAN-LIKE CHAT With AI Central, you'll feel like you're chatting with a real person. AI Central's friendly and conversational tone, combined with its personalized recommendations, make chatting with it a fun and enjoyable experience. Get to know your new AI friend and start chatting today with AI Central! Disclaimer: AI Central is provided for informational purposes only and is not a substitute for professional medical advice. Always consult a qualified healthcare provider for medical guidance. Relying on information from AI Central is at your own discretion, and we do not endorse any specific medical actions or decisions based on the app's content. In case of a medical emergency, seek immediate assistance from a healthcare professional or call emergency services. Privacy Policy: https://arafas.com/privacy.html Terms of Service: https://arafas.com/terms.html
PDF Toolbox
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A PDF toolbox: fifteen tools, one app, bought once: - Split a PDF by page ranges (1-3,7,9-12) or every N pages - Merge several PDFs into one — in order, interleaved, or reversed - Compress a PDF and see the real before/after size - Add a watermark — text, angle, opacity, placement - Add Bates numbers — prefix, starting number, zero-padding - Set or remove a password and its permissions - Read the words off a scan, so they can be selected and searched - Run split, compress, watermark, page numbers, Bates, rotate, password or form-fill across many files The real problem with a PDF app is not whether it works offline. It is what it does to your file once you trust it: corrupted files, blank saves, lost annotations, disappearing pages. PDF Toolbox is built around one rule: your file is never modified, and every PDF it writes is checked before you see it. WHAT'S IN 2.0 - Pages — split by ranges or every N pages, extract, reorder, delete, rotate, duplicate a page - Convert — scan with your camera, photos into a PDF, a PDF into JPEG, PNG, or HEIC images - Reduce — compress while keeping text selectable, or rasterize the pages for the smallest file - Mark — watermark, page numbers, Bates numbering, headers and footers - Mark up — highlight, underline, strike through, note, or draw on the page - Sign — draw or type a signature, then place and scale it - Forms — fill in a PDF form, or lock the answers in - Text — copy, search, and extract all the text in a document - Files — open from Files, iCloud, Mail, or Safari; recents one tap away - Home, Tools, Scan and Settings tabs; every tool in its own colour - iPad — full support, either orientation HOW WE PROTECT YOUR FILE Your original is opened read-only and is never the file PDF Toolbox writes to. Every job builds a new file in a private, temporary location, checks it, and only then hands it to you — through the share sheet or Save to Files. If a check fails, you get a plain error and no file — never a broken one labeled as done. What gets checked on every PDF this app writes: it opens correctly in two independent PDF readers, it has exactly the pages it should, no page comes out blank that wasn't blank in your original, the text you had is still there and still selectable wherever the job promises it, and your original is confirmed untouched — the same SHA-256, byte for byte, before and after. Above 64 MB it is checked on size, date and its first and last megabyte instead, and the receipt says "size and date unchanged" when that is what ran. Two things get fewer than nine, and say so: the strongest compression rasterizes the pages, so its receipt reads "pages rasterized — text no longer selectable" instead of the text clause; and page images and extracted text are not PDFs, so they arrive named and sized under "Saved" rather than "Verified". You see it before you export: the file, named and sized, every check ticked off beneath it. HONEST LIMITS Signing draws your signature onto the page. It is not a legal e-signature service — no identity verification, no audit trail, no certificate. Reading the words off a scan is never perfect. PDF Toolbox lays what it read invisibly over the picture and never alters the page you scanned. Locking a form's answers in flattens dropdown fields showing their first choice rather than the one you picked. Type the answer into a text field if the exact wording matters. PDF Toolbox does not convert Word or Office files to PDF, and it never will. iOS has no on-device way to do that correctly, and we will not upload your file to a server to fake it. Compression can only shrink pictures — a document that is already just text and lines has nothing left to squeeze, and PDF Toolbox says which of those it found rather than inventing a percentage. THE TERMS Bought once. No subscription, no in-app purchases, no ads. Fully offline — no account, no analytics, no network requests. Already own PageSplit? It is now PDF Toolbox — a free update.
Screenshots
Verdict
The clearest difference is price: AI Central at Free against PDF Toolbox's $2.99. AI Central also leads on iOS requirement (15.0 vs 17.0). PDF Toolbox's advantage is in-app purchases (none vs 12). On update cadence, 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
AI Central is free to download; PDF Toolbox costs $2.99 up front. AI Central sells 11 in-app purchases, starting at $4.99 per 7 days. PDF Toolbox asks for nothing beyond the download.
AI Central ships an update every 2 weeks, PDF Toolbox every 3 weeks. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.
| Parameter | AI Central | PDF Toolbox |
|---|---|---|
| Price | Free — better | $2.99 |
| Rating | 4.5 (316 ratings) — better | — |
| Positive reviews | 75.4% of reviews | — |
| Number of ratings | 316 — better | — |
| Update frequency | Every 2 weeks — better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 34 MB | 4 MB |
| Age rating | 17+ | 4+ |
| Developer | ArafasApps | NOSHU, llc |
Bugs and requests
AI Central
Reported bugs
3 issues- App stops working after initial use
- Login and access issues
- Inconsistent performance reliability
Requested features
4 requests- Internet access for real-time information
- Free trial or freemium model
- Better documentation on how the app works
- Offline functionality improvements
PDF Toolbox
Not enough reviews yet to summarise bugs or requests.
In-app purchases
AI Central
- Weekly$4.997 Days
- SparrowAI Standard$9.991 Month
- Weekly$9.997 Days
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- Monthly Plus Discounted$9.991 Month
- Sparrow AI Plus2 variants$19.991 Month
- Sparrow AI Ultra$24.991 Month
- Montly$24.991 Month
- Annual Standard$39.991 Year
- Annual Plus$69.991 Year
- Annual$79.991 Year
- Annual Ultra3 Days trial$99.991 Year
PDF Toolbox
No in-app purchases
Questions
Is AI Central free?
Is PDF Toolbox free?
Do AI Central or PDF Toolbox have ads?
Which is updated more often, AI Central or PDF Toolbox?
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