Midpoint vs Deep Frontier Dive Tools

Midpoint — scan any trading card to get its grade AND its real market price, before you pay for a professional grade. Then chat about it, certify it, and ask other collectors. Measure centering to the millimeter, get instant PSA, BGS, CGC and TAG estimates, then see what it's worth — live values from real eBay sold listings — without paying $80 per card and waiting weeks. KNOW THE GRADE • Snap or pick a photo of any standard trading card — TCGs, sports, Marvel, Star Wars; modern, vintage, foil, holo • ML finds the card and print-frame corners in under a second; live left/right and top/bottom centering ratios with millimeter offsets • Predicted grades from PSA, BGS, CGC and TAG • AI Grading: front + back photos → a full report with overall grade, subgrades and every defect called out MIDPOINT GRADE CERTIFICATE • Turn a front + back AI grade into a shareable certificate: both photos, corner and edge close-ups, every finding, the grade and subgrades, and a public verification page with a QR code • Image and PDF for listings, trades and binders — sold in credit packs, no subscription needed KNOW THE PRICE • Real market values from eBay sold listings, refreshed daily — raw plus PSA 10 / 9 / 8, with YOUR estimated grade highlighted • Price-history charts and recent sales, with links • "Worth grading?" verdicts — does the graded value beat the grading fee? • Scan a graded slab and we read the label and value it at its grade • 2,000,000+ cards: Pokémon, Magic: The Gathering, Yu-Gi-Oh!, One Piece, Lorcana, Dragon Ball, Digimon, Marvel, Star Wars, Garbage Pail Kids and every major sport CHAT • Ask in plain words — "Is my Base Set Charizard worth grading?" — and get answers from real sold prices, in your language • Add a photo and Chat finds the card; ask about your own portfolio too IN MESSAGES • Send a card's price into any chat — photo, set, raw and PSA 10 — straight from the Messages app drawer • Ask what a card is worth or whether grading pays without leaving the conversation, then send the answer • Whoever you message can tap through to the full price history; they don't need the app TRACK YOUR COLLECTION • Portfolio — every saved card valued daily: total worth, profit and loss vs what you paid, biggest movers • Price alerts — a push and an inbox entry when a card you own jumps or dips, plus a weekly portfolio update • Bulk upload for resellers; Snapshots — a clean shareable image of centering, grades and value • Cross-device — same account on phone and at cardcenteringtool.com JOIN THE COMMUNITY • Ask collectors anything — worth grading? PSA or CGC? — answered by members and the Midpoint helper bot • A board for every game and sport; follow discussions, share threads • Post about the card you just scanned with one tap — centering and estimate attached • Earn points and levels for helpful answers; weekly leaderboard; usernames only, report and block controls Not affiliated with PSA, Beckett, CGC, TAG, eBay or any grading company. Estimates follow each company's published centering tolerances; values come from third-party sales data. A Grade Certificate documents Midpoint's AI grade of your photos — not a professional grade, appraisal or guarantee. Privacy: https://www.cardcenteringtool.com/privacy Terms: https://www.cardcenteringtool.com/terms Support: https://www.cardcenteringtool.com/contact

Deep Frontier Dive is a decompression planner for trained technical divers. Plan open-circuit and CCR dives with two validated models, complete gas planning, and the contingencies that matter — on iPhone and iPad, fully offline, in metric units. TWO DECOMPRESSION MODELS • Bühlmann ZHL-16C with gradient factors — presets or fully custom GF low/high • VPM-B and VPM-B/GFS with conservatism levels 0–4 • Cross-validated against published reference schedules OPEN CIRCUIT AND CCR • Open-circuit plans with automatic gas switches at sensible depths — ppO2 hard-capped at 1.6, lean deco mixes at 1.4 • CCR plans with bottom and deco setpoints and diluent control • Full open-circuit bailout schedules from your carried bailout gases — never assumed, always checked, with clear warnings when coverage or volume falls short GAS PLANNING • Per-cylinder consumption from your bottom and deco SAC rates • Reserve strategies including rule of thirds • Minimum gas / rock bottom for a two-diver problem at depth • Lost-gas contingencies: every deco gas lost, replanned, and checked against the remaining volumes DIVE DAYS • Repetitive dives with surface intervals • Tissue and bubble state carried from dive to dive • Cumulative CNS and daily OTU totals WARNINGS THAT MATTER ppO2, END, gas density, isobaric counterdiffusion (rule of fifths), CNS and OTU — flagged as caution or danger before you get wet. GAS TOOLS MOD, best mix, EAD, END, gas density and equivalent air-density depth, SAC calculator, and partial-pressure blending worksheets. BUILT FOR THE FIELD • Altitude diving support • Three configurable ascent-rate phases: bottom to deco, during deco, deco to surface • Salt and fresh water • Saved plans — editable, duplicable, never locked • Runtime tables with depth, duration, runtime, gas and ppO2 for every level • Depth-profile chart with stops and gas-switch markers • Works completely offline. No account, no ads, no tracking. FREE AND PRO Open-circuit Bühlmann planning, the gas plan and saved plans are free forever. A single one-time purchase — Deep Frontier Dive Tools Pro — unlocks CCR planning, VPM-B, lost-gas contingencies, dive days and the gas tools. No subscription. IMPORTANT This app is a planning tool for trained technical divers. It is not a substitute for formal training, a dive computer, or your own judgement. Decompression planning involves inherent uncertainty: always validate schedules against your training and agency procedures, plan adequate reserves, and dive entirely at your own risk.